Home / 858,512.60-1,288,352.10-479,432.60

Finding the Fourth Proportional to 858,512.60, 1,288,352.10 and 479,432.60

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Solution

The fourth proportional to 858,512.60, 1,288,352.10 and 479,432.60 is: 719,474.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,512.60 : 1,288,352.10 = 479,432.60 : x
  2. Step 2: Convert to fraction form
    858,512.60/1,288,352.10 = 479,432.60/x
  3. Step 3: Cross multiply
    858,512.60x = 1,288,352.10 × 479,432.60
  4. Step 4: Simplify right side
    858,512.60x = 617,677,997,018.46
  5. Step 5: Solve for x
    x = 617,677,997,018.46/858,512.60
  6. Step 6: Final answer
    x = 719,474.59

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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.