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Finding the Fourth Proportional to 550,717.13, 760,002.73 and 309,017.57

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Solution

The fourth proportional to 550,717.13, 760,002.73 and 309,017.57 is: 426,451.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,717.13 : 760,002.73 = 309,017.57 : x
  2. Step 2: Convert to fraction form
    550,717.13/760,002.73 = 309,017.57/x
  3. Step 3: Cross multiply
    550,717.13x = 760,002.73 × 309,017.57
  4. Step 4: Simplify right side
    550,717.13x = 234,854,197,945.43
  5. Step 5: Solve for x
    x = 234,854,197,945.43/550,717.13
  6. Step 6: Final answer
    x = 426,451.59

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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.