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Finding the Fourth Proportional to 550,717.64, 760,003.42 and 309,018.08

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Solution

The fourth proportional to 550,717.64, 760,003.42 and 309,018.08 is: 426,452.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,717.64 : 760,003.42 = 309,018.08 : x
  2. Step 2: Convert to fraction form
    550,717.64/760,003.42 = 309,018.08/x
  3. Step 3: Cross multiply
    550,717.64x = 760,003.42 × 309,018.08
  4. Step 4: Simplify right side
    550,717.64x = 234,854,793,841.82
  5. Step 5: Solve for x
    x = 234,854,793,841.82/550,717.64
  6. Step 6: Final answer
    x = 426,452.29

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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.