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Finding the Fourth Proportional to 423,792,947.60, 635,689,421.40 and 366,350,080.40

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Solution

The fourth proportional to 423,792,947.60, 635,689,421.40 and 366,350,080.40 is: 549,525,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,792,947.60 : 635,689,421.40 = 366,350,080.40 : x
  2. Step 2: Convert to fraction form
    423,792,947.60/635,689,421.40 = 366,350,080.40/x
  3. Step 3: Cross multiply
    423,792,947.60x = 635,689,421.40 × 366,350,080.40
  4. Step 4: Simplify right side
    423,792,947.60x = 232,884,870,639,319,456
  5. Step 5: Solve for x
    x = 232,884,870,639,319,456/423,792,947.60
  6. Step 6: Final answer
    x = 549,525,120.60

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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.