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Finding the Fourth Proportional to 611,443.22, 913,047.34 and 499,345.82

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Solution

The fourth proportional to 611,443.22, 913,047.34 and 499,345.82 is: 745,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,443.22 : 913,047.34 = 499,345.82 : x
  2. Step 2: Convert to fraction form
    611,443.22/913,047.34 = 499,345.82/x
  3. Step 3: Cross multiply
    611,443.22x = 913,047.34 × 499,345.82
  4. Step 4: Simplify right side
    611,443.22x = 455,926,372,691.12
  5. Step 5: Solve for x
    x = 455,926,372,691.12/611,443.22
  6. Step 6: Final answer
    x = 745,656.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.