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Finding the Fourth Proportional to 532,684.80, 799,027.20 and 390,967.20

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Solution

The fourth proportional to 532,684.80, 799,027.20 and 390,967.20 is: 586,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,684.80 : 799,027.20 = 390,967.20 : x
  2. Step 2: Convert to fraction form
    532,684.80/799,027.20 = 390,967.20/x
  3. Step 3: Cross multiply
    532,684.80x = 799,027.20 × 390,967.20
  4. Step 4: Simplify right side
    532,684.80x = 312,393,427,107.84
  5. Step 5: Solve for x
    x = 312,393,427,107.84/532,684.80
  6. Step 6: Final answer
    x = 586,450.80

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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.