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Finding the Fourth Proportional to 610,765.30, 915,856.28 and 358,122.72

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Solution

The fourth proportional to 610,765.30, 915,856.28 and 358,122.72 is: 537,013.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,765.30 : 915,856.28 = 358,122.72 : x
  2. Step 2: Convert to fraction form
    610,765.30/915,856.28 = 358,122.72/x
  3. Step 3: Cross multiply
    610,765.30x = 915,856.28 × 358,122.72
  4. Step 4: Simplify right side
    610,765.30x = 327,988,945,307.63
  5. Step 5: Solve for x
    x = 327,988,945,307.63/610,765.30
  6. Step 6: Final answer
    x = 537,013.06

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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.