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Finding the Fourth Proportional to 486,565.60, 729,848.40 and 459,009.40

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Solution

The fourth proportional to 486,565.60, 729,848.40 and 459,009.40 is: 688,514.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,565.60 : 729,848.40 = 459,009.40 : x
  2. Step 2: Convert to fraction form
    486,565.60/729,848.40 = 459,009.40/x
  3. Step 3: Cross multiply
    486,565.60x = 729,848.40 × 459,009.40
  4. Step 4: Simplify right side
    486,565.60x = 335,007,276,174.96
  5. Step 5: Solve for x
    x = 335,007,276,174.96/486,565.60
  6. Step 6: Final answer
    x = 688,514.10

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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.