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Finding the Fourth Proportional to 636,384.72, 878,214.22 and 349,923.26

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Solution

The fourth proportional to 636,384.72, 878,214.22 and 349,923.26 is: 482,895.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,384.72 : 878,214.22 = 349,923.26 : x
  2. Step 2: Convert to fraction form
    636,384.72/878,214.22 = 349,923.26/x
  3. Step 3: Cross multiply
    636,384.72x = 878,214.22 × 349,923.26
  4. Step 4: Simplify right side
    636,384.72x = 307,307,582,840.76
  5. Step 5: Solve for x
    x = 307,307,582,840.76/636,384.72
  6. Step 6: Final answer
    x = 482,895.92

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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.