Home / 438,923.20-658,384.80-328,331.20

Finding the Fourth Proportional to 438,923.20, 658,384.80 and 328,331.20

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Solution

The fourth proportional to 438,923.20, 658,384.80 and 328,331.20 is: 492,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,923.20 : 658,384.80 = 328,331.20 : x
  2. Step 2: Convert to fraction form
    438,923.20/658,384.80 = 328,331.20/x
  3. Step 3: Cross multiply
    438,923.20x = 658,384.80 × 328,331.20
  4. Step 4: Simplify right side
    438,923.20x = 216,168,271,445.76
  5. Step 5: Solve for x
    x = 216,168,271,445.76/438,923.20
  6. Step 6: Final answer
    x = 492,496.80

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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.