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Finding the Fourth Proportional to 556,089.60, 834,134.40 and 345,619.20

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Solution

The fourth proportional to 556,089.60, 834,134.40 and 345,619.20 is: 518,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,089.60 : 834,134.40 = 345,619.20 : x
  2. Step 2: Convert to fraction form
    556,089.60/834,134.40 = 345,619.20/x
  3. Step 3: Cross multiply
    556,089.60x = 834,134.40 × 345,619.20
  4. Step 4: Simplify right side
    556,089.60x = 288,292,864,020.48
  5. Step 5: Solve for x
    x = 288,292,864,020.48/556,089.60
  6. Step 6: Final answer
    x = 518,428.80

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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.