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Finding the Fourth Proportional to 480,693.36, 724,285.08 and 398,287.20

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Solution

The fourth proportional to 480,693.36, 724,285.08 and 398,287.20 is: 600,119.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,693.36 : 724,285.08 = 398,287.20 : x
  2. Step 2: Convert to fraction form
    480,693.36/724,285.08 = 398,287.20/x
  3. Step 3: Cross multiply
    480,693.36x = 724,285.08 × 398,287.20
  4. Step 4: Simplify right side
    480,693.36x = 288,473,476,514.98
  5. Step 5: Solve for x
    x = 288,473,476,514.98/480,693.36
  6. Step 6: Final answer
    x = 600,119.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.