Home / 439,269.60-658,904.40-289,711.20

Finding the Fourth Proportional to 439,269.60, 658,904.40 and 289,711.20

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Solution

The fourth proportional to 439,269.60, 658,904.40 and 289,711.20 is: 434,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,269.60 : 658,904.40 = 289,711.20 : x
  2. Step 2: Convert to fraction form
    439,269.60/658,904.40 = 289,711.20/x
  3. Step 3: Cross multiply
    439,269.60x = 658,904.40 × 289,711.20
  4. Step 4: Simplify right side
    439,269.60x = 190,891,984,409.28
  5. Step 5: Solve for x
    x = 190,891,984,409.28/439,269.60
  6. Step 6: Final answer
    x = 434,566.80

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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.