Home / 787,124.60-1,180,686.90-288,423.80

Finding the Fourth Proportional to 787,124.60, 1,180,686.90 and 288,423.80

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Solution

The fourth proportional to 787,124.60, 1,180,686.90 and 288,423.80 is: 432,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,124.60 : 1,180,686.90 = 288,423.80 : x
  2. Step 2: Convert to fraction form
    787,124.60/1,180,686.90 = 288,423.80/x
  3. Step 3: Cross multiply
    787,124.60x = 1,180,686.90 × 288,423.80
  4. Step 4: Simplify right side
    787,124.60x = 340,538,202,308.22
  5. Step 5: Solve for x
    x = 340,538,202,308.22/787,124.60
  6. Step 6: Final answer
    x = 432,635.70

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Similar ratio
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1.5x scale

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.