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Finding the Fourth Proportional to 543,005.10, 749,156.46 and 313,555.86

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Solution

The fourth proportional to 543,005.10, 749,156.46 and 313,555.86 is: 432,597.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,005.10 : 749,156.46 = 313,555.86 : x
  2. Step 2: Convert to fraction form
    543,005.10/749,156.46 = 313,555.86/x
  3. Step 3: Cross multiply
    543,005.10x = 749,156.46 × 313,555.86
  4. Step 4: Simplify right side
    543,005.10x = 234,902,398,089.86
  5. Step 5: Solve for x
    x = 234,902,398,089.86/543,005.10
  6. Step 6: Final answer
    x = 432,597.04

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1.5x scale

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.