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Finding the Fourth Proportional to 922,686.90, 1,384,030.35 and 257,838.90

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Solution

The fourth proportional to 922,686.90, 1,384,030.35 and 257,838.90 is: 386,758.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,686.90 : 1,384,030.35 = 257,838.90 : x
  2. Step 2: Convert to fraction form
    922,686.90/1,384,030.35 = 257,838.90/x
  3. Step 3: Cross multiply
    922,686.90x = 1,384,030.35 × 257,838.90
  4. Step 4: Simplify right side
    922,686.90x = 356,856,863,010.62
  5. Step 5: Solve for x
    x = 356,856,863,010.62/922,686.90
  6. Step 6: Final answer
    x = 386,758.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.