Home / 747,306.72-1,031,274.68-407,780.64

Finding the Fourth Proportional to 747,306.72, 1,031,274.68 and 407,780.64

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Solution

The fourth proportional to 747,306.72, 1,031,274.68 and 407,780.64 is: 562,732.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,306.72 : 1,031,274.68 = 407,780.64 : x
  2. Step 2: Convert to fraction form
    747,306.72/1,031,274.68 = 407,780.64/x
  3. Step 3: Cross multiply
    747,306.72x = 1,031,274.68 × 407,780.64
  4. Step 4: Simplify right side
    747,306.72x = 420,533,849,026.20
  5. Step 5: Solve for x
    x = 420,533,849,026.20/747,306.72
  6. Step 6: Final answer
    x = 562,732.59

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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.