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Finding the Fourth Proportional to 636,917.52, 878,928 and 350,437.76

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Solution

The fourth proportional to 636,917.52, 878,928 and 350,437.76 is: 483,594.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,917.52 : 878,928 = 350,437.76 : x
  2. Step 2: Convert to fraction form
    636,917.52/878,928 = 350,437.76/x
  3. Step 3: Cross multiply
    636,917.52x = 878,928 × 350,437.76
  4. Step 4: Simplify right side
    636,917.52x = 308,009,559,521.28
  5. Step 5: Solve for x
    x = 308,009,559,521.28/636,917.52
  6. Step 6: Final answer
    x = 483,594.11

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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.