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Finding the Fourth Proportional to 442,706.61, 660,607.03 and 394,993.71

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Solution

The fourth proportional to 442,706.61, 660,607.03 and 394,993.71 is: 589,409.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,706.61 : 660,607.03 = 394,993.71 : x
  2. Step 2: Convert to fraction form
    442,706.61/660,607.03 = 394,993.71/x
  3. Step 3: Cross multiply
    442,706.61x = 660,607.03 × 394,993.71
  4. Step 4: Simplify right side
    442,706.61x = 260,935,621,631.78
  5. Step 5: Solve for x
    x = 260,935,621,631.78/442,706.61
  6. Step 6: Final answer
    x = 589,409.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.