Home / 2,157,939,894.76-2,977,925,620.96-1,205,334,187.67

Finding the Fourth Proportional to 2,157,939,894.76, 2,977,925,620.96 and 1,205,334,187.67

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Solution

The fourth proportional to 2,157,939,894.76, 2,977,925,620.96 and 1,205,334,187.67 is: 1,663,343,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157,939,894.76 : 2,977,925,620.96 = 1,205,334,187.67 : x
  2. Step 2: Convert to fraction form
    2,157,939,894.76/2,977,925,620.96 = 1,205,334,187.67/x
  3. Step 3: Cross multiply
    2,157,939,894.76x = 2,977,925,620.96 × 1,205,334,187.67
  4. Step 4: Simplify right side
    2,157,939,894.76x = 3,589,395,559,282,125,312
  5. Step 5: Solve for x
    x = 3,589,395,559,282,125,312/2,157,939,894.76
  6. Step 6: Final answer
    x = 1,663,343,621.39

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Double scale
Find fourth proportional to 2,157,939,895.76, 2,977,925,622.34 and 1,205,334,188.67
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.