Home / 485,340,769.20-728,011,153.80-178,569,404.40

Finding the Fourth Proportional to 485,340,769.20, 728,011,153.80 and 178,569,404.40

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Solution

The fourth proportional to 485,340,769.20, 728,011,153.80 and 178,569,404.40 is: 267,854,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,340,769.20 : 728,011,153.80 = 178,569,404.40 : x
  2. Step 2: Convert to fraction form
    485,340,769.20/728,011,153.80 = 178,569,404.40/x
  3. Step 3: Cross multiply
    485,340,769.20x = 728,011,153.80 × 178,569,404.40
  4. Step 4: Simplify right side
    485,340,769.20x = 130,000,518,130,622,800
  5. Step 5: Solve for x
    x = 130,000,518,130,622,800/485,340,769.20
  6. Step 6: Final answer
    x = 267,854,106.60

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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.