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Finding the Fourth Proportional to 519,674.40, 717,130.08 and 326,185.20

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Solution

The fourth proportional to 519,674.40, 717,130.08 and 326,185.20 is: 450,122.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,674.40 : 717,130.08 = 326,185.20 : x
  2. Step 2: Convert to fraction form
    519,674.40/717,130.08 = 326,185.20/x
  3. Step 3: Cross multiply
    519,674.40x = 717,130.08 × 326,185.20
  4. Step 4: Simplify right side
    519,674.40x = 233,917,218,570.82
  5. Step 5: Solve for x
    x = 233,917,218,570.82/519,674.40
  6. Step 6: Final answer
    x = 450,122.65

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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.