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Finding the Fourth Proportional to 388,966.60, 583,449.90 and 372,377.80

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Solution

The fourth proportional to 388,966.60, 583,449.90 and 372,377.80 is: 558,566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,966.60 : 583,449.90 = 372,377.80 : x
  2. Step 2: Convert to fraction form
    388,966.60/583,449.90 = 372,377.80/x
  3. Step 3: Cross multiply
    388,966.60x = 583,449.90 × 372,377.80
  4. Step 4: Simplify right side
    388,966.60x = 217,263,790,172.22
  5. Step 5: Solve for x
    x = 217,263,790,172.22/388,966.60
  6. Step 6: Final answer
    x = 558,566.70

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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.