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Finding the Fourth Proportional to 866,145.77, 1,298,095.03 and 385,689.91

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Solution

The fourth proportional to 866,145.77, 1,298,095.03 and 385,689.91 is: 578,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,145.77 : 1,298,095.03 = 385,689.91 : x
  2. Step 2: Convert to fraction form
    866,145.77/1,298,095.03 = 385,689.91/x
  3. Step 3: Cross multiply
    866,145.77x = 1,298,095.03 × 385,689.91
  4. Step 4: Simplify right side
    866,145.77x = 500,662,155,292.15
  5. Step 5: Solve for x
    x = 500,662,155,292.15/866,145.77
  6. Step 6: Final answer
    x = 578,034.52

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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.