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Finding the Fourth Proportional to 909,312.32, 1,254,793 and 501,416.78

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Solution

The fourth proportional to 909,312.32, 1,254,793 and 501,416.78 is: 691,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,312.32 : 1,254,793 = 501,416.78 : x
  2. Step 2: Convert to fraction form
    909,312.32/1,254,793 = 501,416.78/x
  3. Step 3: Cross multiply
    909,312.32x = 1,254,793 × 501,416.78
  4. Step 4: Simplify right side
    909,312.32x = 629,174,265,626.54
  5. Step 5: Solve for x
    x = 629,174,265,626.54/909,312.32
  6. Step 6: Final answer
    x = 691,923.17

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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.