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Finding the Fourth Proportional to 553,123.36, 828,985.20 and 353,366.56

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Solution

The fourth proportional to 553,123.36, 828,985.20 and 353,366.56 is: 529,602.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,123.36 : 828,985.20 = 353,366.56 : x
  2. Step 2: Convert to fraction form
    553,123.36/828,985.20 = 353,366.56/x
  3. Step 3: Cross multiply
    553,123.36x = 828,985.20 × 353,366.56
  4. Step 4: Simplify right side
    553,123.36x = 292,935,648,414.91
  5. Step 5: Solve for x
    x = 292,935,648,414.91/553,123.36
  6. Step 6: Final answer
    x = 529,602.74

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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.