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Finding the Fourth Proportional to 887,659.70, 1,331,489.55 and 355,262.90

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Solution

The fourth proportional to 887,659.70, 1,331,489.55 and 355,262.90 is: 532,894.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,659.70 : 1,331,489.55 = 355,262.90 : x
  2. Step 2: Convert to fraction form
    887,659.70/1,331,489.55 = 355,262.90/x
  3. Step 3: Cross multiply
    887,659.70x = 1,331,489.55 × 355,262.90
  4. Step 4: Simplify right side
    887,659.70x = 473,028,838,852.70
  5. Step 5: Solve for x
    x = 473,028,838,852.70/887,659.70
  6. Step 6: Final answer
    x = 532,894.35

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Double scale
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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.