Home / 522,042.20-783,063.30-312,090.20

Finding the Fourth Proportional to 522,042.20, 783,063.30 and 312,090.20

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Solution

The fourth proportional to 522,042.20, 783,063.30 and 312,090.20 is: 468,135.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,042.20 : 783,063.30 = 312,090.20 : x
  2. Step 2: Convert to fraction form
    522,042.20/783,063.30 = 312,090.20/x
  3. Step 3: Cross multiply
    522,042.20x = 783,063.30 × 312,090.20
  4. Step 4: Simplify right side
    522,042.20x = 244,386,381,909.66
  5. Step 5: Solve for x
    x = 244,386,381,909.66/522,042.20
  6. Step 6: Final answer
    x = 468,135.30

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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.