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Finding the Fourth Proportional to 637,118.61, 879,207.54 and 346,717.83

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Solution

The fourth proportional to 637,118.61, 879,207.54 and 346,717.83 is: 478,461.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,118.61 : 879,207.54 = 346,717.83 : x
  2. Step 2: Convert to fraction form
    637,118.61/879,207.54 = 346,717.83/x
  3. Step 3: Cross multiply
    637,118.61x = 879,207.54 × 346,717.83
  4. Step 4: Simplify right side
    637,118.61x = 304,836,930,388.44
  5. Step 5: Solve for x
    x = 304,836,930,388.44/637,118.61
  6. Step 6: Final answer
    x = 478,461.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.