Home / 787,124.10-1,180,686.15-288,423.30

Finding the Fourth Proportional to 787,124.10, 1,180,686.15 and 288,423.30

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Solution

The fourth proportional to 787,124.10, 1,180,686.15 and 288,423.30 is: 432,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,124.10 : 1,180,686.15 = 288,423.30 : x
  2. Step 2: Convert to fraction form
    787,124.10/1,180,686.15 = 288,423.30/x
  3. Step 3: Cross multiply
    787,124.10x = 1,180,686.15 × 288,423.30
  4. Step 4: Simplify right side
    787,124.10x = 340,537,395,647.30
  5. Step 5: Solve for x
    x = 340,537,395,647.30/787,124.10
  6. Step 6: Final answer
    x = 432,634.95

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Double scale
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Similar ratio
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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.