Home / 721,713,193.27-995,964,621.05-391,688,332.27

Finding the Fourth Proportional to 721,713,193.27, 995,964,621.05 and 391,688,332.27

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Solution

The fourth proportional to 721,713,193.27, 995,964,621.05 and 391,688,332.27 is: 540,530,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,713,193.27 : 995,964,621.05 = 391,688,332.27 : x
  2. Step 2: Convert to fraction form
    721,713,193.27/995,964,621.05 = 391,688,332.27/x
  3. Step 3: Cross multiply
    721,713,193.27x = 995,964,621.05 × 391,688,332.27
  4. Step 4: Simplify right side
    721,713,193.27x = 390,107,721,417,486,336
  5. Step 5: Solve for x
    x = 390,107,721,417,486,336/721,713,193.27
  6. Step 6: Final answer
    x = 540,530,123.40

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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.