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Finding the Fourth Proportional to 457,808.40, 686,712.60 and 369,234.90

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Solution

The fourth proportional to 457,808.40, 686,712.60 and 369,234.90 is: 553,852.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,808.40 : 686,712.60 = 369,234.90 : x
  2. Step 2: Convert to fraction form
    457,808.40/686,712.60 = 369,234.90/x
  3. Step 3: Cross multiply
    457,808.40x = 686,712.60 × 369,234.90
  4. Step 4: Simplify right side
    457,808.40x = 253,558,258,189.74
  5. Step 5: Solve for x
    x = 253,558,258,189.74/457,808.40
  6. Step 6: Final answer
    x = 553,852.35

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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.