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Finding the Fourth Proportional to 488,279.20, 732,418.80 and 409,547.20

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Solution

The fourth proportional to 488,279.20, 732,418.80 and 409,547.20 is: 614,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,279.20 : 732,418.80 = 409,547.20 : x
  2. Step 2: Convert to fraction form
    488,279.20/732,418.80 = 409,547.20/x
  3. Step 3: Cross multiply
    488,279.20x = 732,418.80 × 409,547.20
  4. Step 4: Simplify right side
    488,279.20x = 299,960,068,767.36
  5. Step 5: Solve for x
    x = 299,960,068,767.36/488,279.20
  6. Step 6: Final answer
    x = 614,320.80

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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.