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Finding the Fourth Proportional to 642,833.16, 887,050.04 and 356,328.86

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Solution

The fourth proportional to 642,833.16, 887,050.04 and 356,328.86 is: 491,700.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,833.16 : 887,050.04 = 356,328.86 : x
  2. Step 2: Convert to fraction form
    642,833.16/887,050.04 = 356,328.86/x
  3. Step 3: Cross multiply
    642,833.16x = 887,050.04 × 356,328.86
  4. Step 4: Simplify right side
    642,833.16x = 316,081,529,516.15
  5. Step 5: Solve for x
    x = 316,081,529,516.15/642,833.16
  6. Step 6: Final answer
    x = 491,700.72

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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.