Home / 442,870,906.20-664,495,316.10-212,721,523.80

Finding the Fourth Proportional to 442,870,906.20, 664,495,316.10 and 212,721,523.80

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Solution

The fourth proportional to 442,870,906.20, 664,495,316.10 and 212,721,523.80 is: 319,173,046.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,870,906.20 : 664,495,316.10 = 212,721,523.80 : x
  2. Step 2: Convert to fraction form
    442,870,906.20/664,495,316.10 = 212,721,523.80/x
  3. Step 3: Cross multiply
    442,870,906.20x = 664,495,316.10 × 212,721,523.80
  4. Step 4: Simplify right side
    442,870,906.20x = 141,352,456,198,754,688
  5. Step 5: Solve for x
    x = 141,352,456,198,754,688/442,870,906.20
  6. Step 6: Final answer
    x = 319,173,046.19

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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.