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Finding the Fourth Proportional to 636,726.30, 878,677.38 and 350,240.10

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Solution

The fourth proportional to 636,726.30, 878,677.38 and 350,240.10 is: 483,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,726.30 : 878,677.38 = 350,240.10 : x
  2. Step 2: Convert to fraction form
    636,726.30/878,677.38 = 350,240.10/x
  3. Step 3: Cross multiply
    636,726.30x = 878,677.38 × 350,240.10
  4. Step 4: Simplify right side
    636,726.30x = 307,748,053,438.94
  5. Step 5: Solve for x
    x = 307,748,053,438.94/636,726.30
  6. Step 6: Final answer
    x = 483,328.63

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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.