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Finding the Fourth Proportional to 721,754,460.87, 995,850,444.39 and 408,488,674.74

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Solution

The fourth proportional to 721,754,460.87, 995,850,444.39 and 408,488,674.74 is: 563,617,754.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,754,460.87 : 995,850,444.39 = 408,488,674.74 : x
  2. Step 2: Convert to fraction form
    721,754,460.87/995,850,444.39 = 408,488,674.74/x
  3. Step 3: Cross multiply
    721,754,460.87x = 995,850,444.39 × 408,488,674.74
  4. Step 4: Simplify right side
    721,754,460.87x = 406,793,628,268,111,168
  5. Step 5: Solve for x
    x = 406,793,628,268,111,168/721,754,460.87
  6. Step 6: Final answer
    x = 563,617,754.13

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.