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Finding the Fourth Proportional to 487,907.20, 731,860.80 and 410,924.80

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Solution

The fourth proportional to 487,907.20, 731,860.80 and 410,924.80 is: 616,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,907.20 : 731,860.80 = 410,924.80 : x
  2. Step 2: Convert to fraction form
    487,907.20/731,860.80 = 410,924.80/x
  3. Step 3: Cross multiply
    487,907.20x = 731,860.80 × 410,924.80
  4. Step 4: Simplify right side
    487,907.20x = 300,739,752,867.84
  5. Step 5: Solve for x
    x = 300,739,752,867.84/487,907.20
  6. Step 6: Final answer
    x = 616,387.20

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Similar ratio
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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.