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Finding the Fourth Proportional to 675,637.32, 932,717.12 and 389,102.08

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Solution

The fourth proportional to 675,637.32, 932,717.12 and 389,102.08 is: 537,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,637.32 : 932,717.12 = 389,102.08 : x
  2. Step 2: Convert to fraction form
    675,637.32/932,717.12 = 389,102.08/x
  3. Step 3: Cross multiply
    675,637.32x = 932,717.12 × 389,102.08
  4. Step 4: Simplify right side
    675,637.32x = 362,922,171,443.61
  5. Step 5: Solve for x
    x = 362,922,171,443.61/675,637.32
  6. Step 6: Final answer
    x = 537,155.31

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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.