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Finding the Fourth Proportional to 472,392,408.80, 708,588,613.20 and 386,298,966.80

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Solution

The fourth proportional to 472,392,408.80, 708,588,613.20 and 386,298,966.80 is: 579,448,450.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,408.80 : 708,588,613.20 = 386,298,966.80 : x
  2. Step 2: Convert to fraction form
    472,392,408.80/708,588,613.20 = 386,298,966.80/x
  3. Step 3: Cross multiply
    472,392,408.80x = 708,588,613.20 × 386,298,966.80
  4. Step 4: Simplify right side
    472,392,408.80x = 273,727,049,165,404,864
  5. Step 5: Solve for x
    x = 273,727,049,165,404,864/472,392,408.80
  6. Step 6: Final answer
    x = 579,448,450.20

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1.5x scale

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.