Home / 1,202,143.28-1,658,978.12-658,270.40

Finding the Fourth Proportional to 1,202,143.28, 1,658,978.12 and 658,270.40

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Solution

The fourth proportional to 1,202,143.28, 1,658,978.12 and 658,270.40 is: 908,424.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202,143.28 : 1,658,978.12 = 658,270.40 : x
  2. Step 2: Convert to fraction form
    1,202,143.28/1,658,978.12 = 658,270.40/x
  3. Step 3: Cross multiply
    1,202,143.28x = 1,658,978.12 × 658,270.40
  4. Step 4: Simplify right side
    1,202,143.28x = 1,092,056,190,643.65
  5. Step 5: Solve for x
    x = 1,092,056,190,643.65/1,202,143.28
  6. Step 6: Final answer
    x = 908,424.32

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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.