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Finding the Fourth Proportional to 636,302.89, 878,090.10 and 349,820.47

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Solution

The fourth proportional to 636,302.89, 878,090.10 and 349,820.47 is: 482,747.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,302.89 : 878,090.10 = 349,820.47 : x
  2. Step 2: Convert to fraction form
    636,302.89/878,090.10 = 349,820.47/x
  3. Step 3: Cross multiply
    636,302.89x = 878,090.10 × 349,820.47
  4. Step 4: Simplify right side
    636,302.89x = 307,173,891,484.35
  5. Step 5: Solve for x
    x = 307,173,891,484.35/636,302.89
  6. Step 6: Final answer
    x = 482,747.91

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1.5x scale

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.