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Finding the Fourth Proportional to 659,930.72, 910,699.06 and 358,124.72

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Solution

The fourth proportional to 659,930.72, 910,699.06 and 358,124.72 is: 494,209.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,930.72 : 910,699.06 = 358,124.72 : x
  2. Step 2: Convert to fraction form
    659,930.72/910,699.06 = 358,124.72/x
  3. Step 3: Cross multiply
    659,930.72x = 910,699.06 × 358,124.72
  4. Step 4: Simplify right side
    659,930.72x = 326,143,845,866.76
  5. Step 5: Solve for x
    x = 326,143,845,866.76/659,930.72
  6. Step 6: Final answer
    x = 494,209.22

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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.