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Finding the Fourth Proportional to 915,759, 1,263,747.42 and 507,923.29

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Solution

The fourth proportional to 915,759, 1,263,747.42 and 507,923.29 is: 700,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,759 : 1,263,747.42 = 507,923.29 : x
  2. Step 2: Convert to fraction form
    915,759/1,263,747.42 = 507,923.29/x
  3. Step 3: Cross multiply
    915,759x = 1,263,747.42 × 507,923.29
  4. Step 4: Simplify right side
    915,759x = 641,886,748,875.10
  5. Step 5: Solve for x
    x = 641,886,748,875.10/915,759
  6. Step 6: Final answer
    x = 700,934.14

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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.