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Finding the Fourth Proportional to 608,423.40, 912,635.10 and 384,037.20

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Solution

The fourth proportional to 608,423.40, 912,635.10 and 384,037.20 is: 576,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,423.40 : 912,635.10 = 384,037.20 : x
  2. Step 2: Convert to fraction form
    608,423.40/912,635.10 = 384,037.20/x
  3. Step 3: Cross multiply
    608,423.40x = 912,635.10 × 384,037.20
  4. Step 4: Simplify right side
    608,423.40x = 350,485,828,425.72
  5. Step 5: Solve for x
    x = 350,485,828,425.72/608,423.40
  6. Step 6: Final answer
    x = 576,055.80

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Similar ratio
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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.