Home / 458,731.20-688,096.80-409,742.40

Finding the Fourth Proportional to 458,731.20, 688,096.80 and 409,742.40

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Solution

The fourth proportional to 458,731.20, 688,096.80 and 409,742.40 is: 614,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,731.20 : 688,096.80 = 409,742.40 : x
  2. Step 2: Convert to fraction form
    458,731.20/688,096.80 = 409,742.40/x
  3. Step 3: Cross multiply
    458,731.20x = 688,096.80 × 409,742.40
  4. Step 4: Simplify right side
    458,731.20x = 281,942,434,264.32
  5. Step 5: Solve for x
    x = 281,942,434,264.32/458,731.20
  6. Step 6: Final answer
    x = 614,613.60

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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.