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Finding the Fourth Proportional to 747,370, 1,031,392.47 and 407,860.12

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Solution

The fourth proportional to 747,370, 1,031,392.47 and 407,860.12 is: 562,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,370 : 1,031,392.47 = 407,860.12 : x
  2. Step 2: Convert to fraction form
    747,370/1,031,392.47 = 407,860.12/x
  3. Step 3: Cross multiply
    747,370x = 1,031,392.47 × 407,860.12
  4. Step 4: Simplify right side
    747,370x = 420,663,856,581.30
  5. Step 5: Solve for x
    x = 420,663,856,581.30/747,370
  6. Step 6: Final answer
    x = 562,858.90

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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.