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Finding the Fourth Proportional to 652,707.18, 978,127.65 and 371,643.66

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Solution

The fourth proportional to 652,707.18, 978,127.65 and 371,643.66 is: 556,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,707.18 : 978,127.65 = 371,643.66 : x
  2. Step 2: Convert to fraction form
    652,707.18/978,127.65 = 371,643.66/x
  3. Step 3: Cross multiply
    652,707.18x = 978,127.65 × 371,643.66
  4. Step 4: Simplify right side
    652,707.18x = 363,514,939,793.20
  5. Step 5: Solve for x
    x = 363,514,939,793.20/652,707.18
  6. Step 6: Final answer
    x = 556,934.18

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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.