Home / 728,432.40-1,091,482.20-478,822.80

Finding the Fourth Proportional to 728,432.40, 1,091,482.20 and 478,822.80

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Solution

The fourth proportional to 728,432.40, 1,091,482.20 and 478,822.80 is: 717,467.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,432.40 : 1,091,482.20 = 478,822.80 : x
  2. Step 2: Convert to fraction form
    728,432.40/1,091,482.20 = 478,822.80/x
  3. Step 3: Cross multiply
    728,432.40x = 1,091,482.20 × 478,822.80
  4. Step 4: Simplify right side
    728,432.40x = 522,626,563,154.16
  5. Step 5: Solve for x
    x = 522,626,563,154.16/728,432.40
  6. Step 6: Final answer
    x = 717,467.49

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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.