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Finding the Fourth Proportional to 558,684.32, 838,020.48 and 369,988.89

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Solution

The fourth proportional to 558,684.32, 838,020.48 and 369,988.89 is: 554,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,684.32 : 838,020.48 = 369,988.89 : x
  2. Step 2: Convert to fraction form
    558,684.32/838,020.48 = 369,988.89/x
  3. Step 3: Cross multiply
    558,684.32x = 838,020.48 × 369,988.89
  4. Step 4: Simplify right side
    558,684.32x = 310,058,268,947.59
  5. Step 5: Solve for x
    x = 310,058,268,947.59/558,684.32
  6. Step 6: Final answer
    x = 554,979.37

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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.