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Finding the Fourth Proportional to 553,562.10, 830,343.15 and 419,717.70

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Solution

The fourth proportional to 553,562.10, 830,343.15 and 419,717.70 is: 629,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,562.10 : 830,343.15 = 419,717.70 : x
  2. Step 2: Convert to fraction form
    553,562.10/830,343.15 = 419,717.70/x
  3. Step 3: Cross multiply
    553,562.10x = 830,343.15 × 419,717.70
  4. Step 4: Simplify right side
    553,562.10x = 348,509,717,128.76
  5. Step 5: Solve for x
    x = 348,509,717,128.76/553,562.10
  6. Step 6: Final answer
    x = 629,576.55

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Similar ratio
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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.