Home / 1,187,060.20-1,780,590.30-345,639.40

Finding the Fourth Proportional to 1,187,060.20, 1,780,590.30 and 345,639.40

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Solution

The fourth proportional to 1,187,060.20, 1,780,590.30 and 345,639.40 is: 518,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,060.20 : 1,780,590.30 = 345,639.40 : x
  2. Step 2: Convert to fraction form
    1,187,060.20/1,780,590.30 = 345,639.40/x
  3. Step 3: Cross multiply
    1,187,060.20x = 1,780,590.30 × 345,639.40
  4. Step 4: Simplify right side
    1,187,060.20x = 615,442,162,937.82
  5. Step 5: Solve for x
    x = 615,442,162,937.82/1,187,060.20
  6. Step 6: Final answer
    x = 518,459.10

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Double scale
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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.