Home / 917,136.40-1,375,704.60-418,500.40

Finding the Fourth Proportional to 917,136.40, 1,375,704.60 and 418,500.40

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Solution

The fourth proportional to 917,136.40, 1,375,704.60 and 418,500.40 is: 627,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,136.40 : 1,375,704.60 = 418,500.40 : x
  2. Step 2: Convert to fraction form
    917,136.40/1,375,704.60 = 418,500.40/x
  3. Step 3: Cross multiply
    917,136.40x = 1,375,704.60 × 418,500.40
  4. Step 4: Simplify right side
    917,136.40x = 575,732,925,381.84
  5. Step 5: Solve for x
    x = 575,732,925,381.84/917,136.40
  6. Step 6: Final answer
    x = 627,750.60

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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.