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Finding the Fourth Proportional to 550,965.76, 760,274.34 and 309,274.92

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Solution

The fourth proportional to 550,965.76, 760,274.34 and 309,274.92 is: 426,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,965.76 : 760,274.34 = 309,274.92 : x
  2. Step 2: Convert to fraction form
    550,965.76/760,274.34 = 309,274.92/x
  3. Step 3: Cross multiply
    550,965.76x = 760,274.34 × 309,274.92
  4. Step 4: Simplify right side
    550,965.76x = 235,133,785,681.55
  5. Step 5: Solve for x
    x = 235,133,785,681.55/550,965.76
  6. Step 6: Final answer
    x = 426,766.60

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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.