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Finding the Fourth Proportional to 553,454.20, 830,181.30 and 542,956.60

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Solution

The fourth proportional to 553,454.20, 830,181.30 and 542,956.60 is: 814,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,454.20 : 830,181.30 = 542,956.60 : x
  2. Step 2: Convert to fraction form
    553,454.20/830,181.30 = 542,956.60/x
  3. Step 3: Cross multiply
    553,454.20x = 830,181.30 × 542,956.60
  4. Step 4: Simplify right side
    553,454.20x = 450,752,416,031.58
  5. Step 5: Solve for x
    x = 450,752,416,031.58/553,454.20
  6. Step 6: Final answer
    x = 814,434.90

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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.