Home / 515,821.10-773,731.65-326,864.30

Finding the Fourth Proportional to 515,821.10, 773,731.65 and 326,864.30

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Solution

The fourth proportional to 515,821.10, 773,731.65 and 326,864.30 is: 490,296.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,821.10 : 773,731.65 = 326,864.30 : x
  2. Step 2: Convert to fraction form
    515,821.10/773,731.65 = 326,864.30/x
  3. Step 3: Cross multiply
    515,821.10x = 773,731.65 × 326,864.30
  4. Step 4: Simplify right side
    515,821.10x = 252,905,254,165.10
  5. Step 5: Solve for x
    x = 252,905,254,165.10/515,821.10
  6. Step 6: Final answer
    x = 490,296.45

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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.