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Finding the Fourth Proportional to 659,610.60, 989,743.95 and 260,264.40

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Solution

The fourth proportional to 659,610.60, 989,743.95 and 260,264.40 is: 390,526.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,610.60 : 989,743.95 = 260,264.40 : x
  2. Step 2: Convert to fraction form
    659,610.60/989,743.95 = 260,264.40/x
  3. Step 3: Cross multiply
    659,610.60x = 989,743.95 × 260,264.40
  4. Step 4: Simplify right side
    659,610.60x = 257,595,115,300.38
  5. Step 5: Solve for x
    x = 257,595,115,300.38/659,610.60
  6. Step 6: Final answer
    x = 390,526.04

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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.