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Finding the Fourth Proportional to 532,685.80, 799,028.70 and 390,968.20

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Solution

The fourth proportional to 532,685.80, 799,028.70 and 390,968.20 is: 586,452.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,685.80 : 799,028.70 = 390,968.20 : x
  2. Step 2: Convert to fraction form
    532,685.80/799,028.70 = 390,968.20/x
  3. Step 3: Cross multiply
    532,685.80x = 799,028.70 × 390,968.20
  4. Step 4: Simplify right side
    532,685.80x = 312,394,812,587.34
  5. Step 5: Solve for x
    x = 312,394,812,587.34/532,685.80
  6. Step 6: Final answer
    x = 586,452.30

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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.