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Finding the Fourth Proportional to 526,301.72, 726,300.47 and 290,562.93

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Solution

The fourth proportional to 526,301.72, 726,300.47 and 290,562.93 is: 400,979.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,301.72 : 726,300.47 = 290,562.93 : x
  2. Step 2: Convert to fraction form
    526,301.72/726,300.47 = 290,562.93/x
  3. Step 3: Cross multiply
    526,301.72x = 726,300.47 × 290,562.93
  4. Step 4: Simplify right side
    526,301.72x = 211,035,991,170.76
  5. Step 5: Solve for x
    x = 211,035,991,170.76/526,301.72
  6. Step 6: Final answer
    x = 400,979.11

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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.