Home / 765,589.09-1,149,181.67-339,424.20

Finding the Fourth Proportional to 765,589.09, 1,149,181.67 and 339,424.20

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Solution

The fourth proportional to 765,589.09, 1,149,181.67 and 339,424.20 is: 509,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,589.09 : 1,149,181.67 = 339,424.20 : x
  2. Step 2: Convert to fraction form
    765,589.09/1,149,181.67 = 339,424.20/x
  3. Step 3: Cross multiply
    765,589.09x = 1,149,181.67 × 339,424.20
  4. Step 4: Simplify right side
    765,589.09x = 390,060,068,994.41
  5. Step 5: Solve for x
    x = 390,060,068,994.41/765,589.09
  6. Step 6: Final answer
    x = 509,490.11

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Double scale
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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.