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Finding the Fourth Proportional to 439,231.40, 658,847.10 and 434,565.80

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Solution

The fourth proportional to 439,231.40, 658,847.10 and 434,565.80 is: 651,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,231.40 : 658,847.10 = 434,565.80 : x
  2. Step 2: Convert to fraction form
    439,231.40/658,847.10 = 434,565.80/x
  3. Step 3: Cross multiply
    439,231.40x = 658,847.10 × 434,565.80
  4. Step 4: Simplify right side
    439,231.40x = 286,312,417,089.18
  5. Step 5: Solve for x
    x = 286,312,417,089.18/439,231.40
  6. Step 6: Final answer
    x = 651,848.70

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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.