Home / 1,120,697,098.60-1,681,045,647.90-393,685,810.60

Finding the Fourth Proportional to 1,120,697,098.60, 1,681,045,647.90 and 393,685,810.60

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Solution

The fourth proportional to 1,120,697,098.60, 1,681,045,647.90 and 393,685,810.60 is: 590,528,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,697,098.60 : 1,681,045,647.90 = 393,685,810.60 : x
  2. Step 2: Convert to fraction form
    1,120,697,098.60/1,681,045,647.90 = 393,685,810.60/x
  3. Step 3: Cross multiply
    1,120,697,098.60x = 1,681,045,647.90 × 393,685,810.60
  4. Step 4: Simplify right side
    1,120,697,098.60x = 661,803,818,549,113,728
  5. Step 5: Solve for x
    x = 661,803,818,549,113,728/1,120,697,098.60
  6. Step 6: Final answer
    x = 590,528,715.90

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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.