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Finding the Fourth Proportional to 634,663.16, 952,243.68 and 279,428

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Solution

The fourth proportional to 634,663.16, 952,243.68 and 279,428 is: 419,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,663.16 : 952,243.68 = 279,428 : x
  2. Step 2: Convert to fraction form
    634,663.16/952,243.68 = 279,428/x
  3. Step 3: Cross multiply
    634,663.16x = 952,243.68 × 279,428
  4. Step 4: Simplify right side
    634,663.16x = 266,083,547,015.04
  5. Step 5: Solve for x
    x = 266,083,547,015.04/634,663.16
  6. Step 6: Final answer
    x = 419,251.60

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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.