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Finding the Fourth Proportional to 860,902.40, 1,290,892.80 and 361,702.40

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Solution

The fourth proportional to 860,902.40, 1,290,892.80 and 361,702.40 is: 542,360.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,902.40 : 1,290,892.80 = 361,702.40 : x
  2. Step 2: Convert to fraction form
    860,902.40/1,290,892.80 = 361,702.40/x
  3. Step 3: Cross multiply
    860,902.40x = 1,290,892.80 × 361,702.40
  4. Step 4: Simplify right side
    860,902.40x = 466,919,023,902.72
  5. Step 5: Solve for x
    x = 466,919,023,902.72/860,902.40
  6. Step 6: Final answer
    x = 542,360.00

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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.