Home / 688,040.20-1,032,060.30-520,078.60

Finding the Fourth Proportional to 688,040.20, 1,032,060.30 and 520,078.60

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Solution

The fourth proportional to 688,040.20, 1,032,060.30 and 520,078.60 is: 780,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,040.20 : 1,032,060.30 = 520,078.60 : x
  2. Step 2: Convert to fraction form
    688,040.20/1,032,060.30 = 520,078.60/x
  3. Step 3: Cross multiply
    688,040.20x = 1,032,060.30 × 520,078.60
  4. Step 4: Simplify right side
    688,040.20x = 536,752,475,939.58
  5. Step 5: Solve for x
    x = 536,752,475,939.58/688,040.20
  6. Step 6: Final answer
    x = 780,117.90

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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.