Home / 671,421.60-1,007,132.40-664,423.20

Finding the Fourth Proportional to 671,421.60, 1,007,132.40 and 664,423.20

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Solution

The fourth proportional to 671,421.60, 1,007,132.40 and 664,423.20 is: 996,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,421.60 : 1,007,132.40 = 664,423.20 : x
  2. Step 2: Convert to fraction form
    671,421.60/1,007,132.40 = 664,423.20/x
  3. Step 3: Cross multiply
    671,421.60x = 1,007,132.40 × 664,423.20
  4. Step 4: Simplify right side
    671,421.60x = 669,162,132,031.68
  5. Step 5: Solve for x
    x = 669,162,132,031.68/671,421.60
  6. Step 6: Final answer
    x = 996,634.80

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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.