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Finding the Fourth Proportional to 614,426.40, 921,769.20 and 259,257.60

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Solution

The fourth proportional to 614,426.40, 921,769.20 and 259,257.60 is: 388,941.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,426.40 : 921,769.20 = 259,257.60 : x
  2. Step 2: Convert to fraction form
    614,426.40/921,769.20 = 259,257.60/x
  3. Step 3: Cross multiply
    614,426.40x = 921,769.20 × 259,257.60
  4. Step 4: Simplify right side
    614,426.40x = 238,975,670,545.92
  5. Step 5: Solve for x
    x = 238,975,670,545.92/614,426.40
  6. Step 6: Final answer
    x = 388,941.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.