Home / 3,985,638,688.40-5,978,458,032.60-2,126,020,341.20

Finding the Fourth Proportional to 3,985,638,688.40, 5,978,458,032.60 and 2,126,020,341.20

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Solution

The fourth proportional to 3,985,638,688.40, 5,978,458,032.60 and 2,126,020,341.20 is: 3,189,030,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,638,688.40 : 5,978,458,032.60 = 2,126,020,341.20 : x
  2. Step 2: Convert to fraction form
    3,985,638,688.40/5,978,458,032.60 = 2,126,020,341.20/x
  3. Step 3: Cross multiply
    3,985,638,688.40x = 5,978,458,032.60 × 2,126,020,341.20
  4. Step 4: Simplify right side
    3,985,638,688.40x = 12,710,323,386,318,133,248
  5. Step 5: Solve for x
    x = 12,710,323,386,318,133,248/3,985,638,688.40
  6. Step 6: Final answer
    x = 3,189,030,511.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.