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Finding the Fourth Proportional to 675,616.33, 932,688.08 and 389,081.06

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Solution

The fourth proportional to 675,616.33, 932,688.08 and 389,081.06 is: 537,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,616.33 : 932,688.08 = 389,081.06 : x
  2. Step 2: Convert to fraction form
    675,616.33/932,688.08 = 389,081.06/x
  3. Step 3: Cross multiply
    675,616.33x = 932,688.08 × 389,081.06
  4. Step 4: Simplify right side
    675,616.33x = 362,891,266,815.77
  5. Step 5: Solve for x
    x = 362,891,266,815.77/675,616.33
  6. Step 6: Final answer
    x = 537,126.25

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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.