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Finding the Fourth Proportional to 424,659.68, 637,011.84 and 109,118.72

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Solution

The fourth proportional to 424,659.68, 637,011.84 and 109,118.72 is: 163,683.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,659.68 : 637,011.84 = 109,118.72 : x
  2. Step 2: Convert to fraction form
    424,659.68/637,011.84 = 109,118.72/x
  3. Step 3: Cross multiply
    424,659.68x = 637,011.84 × 109,118.72
  4. Step 4: Simplify right side
    424,659.68x = 69,509,916,605.64
  5. Step 5: Solve for x
    x = 69,509,916,605.64/424,659.68
  6. Step 6: Final answer
    x = 163,683.82

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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.