Home / 485,752,370.66-728,458,070.45-135,904,428.21

Finding the Fourth Proportional to 485,752,370.66, 728,458,070.45 and 135,904,428.21

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Solution

The fourth proportional to 485,752,370.66, 728,458,070.45 and 135,904,428.21 is: 203,808,943.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,752,370.66 : 728,458,070.45 = 135,904,428.21 : x
  2. Step 2: Convert to fraction form
    485,752,370.66/728,458,070.45 = 135,904,428.21/x
  3. Step 3: Cross multiply
    485,752,370.66x = 728,458,070.45 × 135,904,428.21
  4. Step 4: Simplify right side
    485,752,370.66x = 99,000,677,535,371,152
  5. Step 5: Solve for x
    x = 99,000,677,535,371,152/485,752,370.66
  6. Step 6: Final answer
    x = 203,808,943.64

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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.