Home / 1,377,276.90-2,065,915.35-478,419.90

Finding the Fourth Proportional to 1,377,276.90, 2,065,915.35 and 478,419.90

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Solution

The fourth proportional to 1,377,276.90, 2,065,915.35 and 478,419.90 is: 717,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,276.90 : 2,065,915.35 = 478,419.90 : x
  2. Step 2: Convert to fraction form
    1,377,276.90/2,065,915.35 = 478,419.90/x
  3. Step 3: Cross multiply
    1,377,276.90x = 2,065,915.35 × 478,419.90
  4. Step 4: Simplify right side
    1,377,276.90x = 988,375,015,155.47
  5. Step 5: Solve for x
    x = 988,375,015,155.47/1,377,276.90
  6. Step 6: Final answer
    x = 717,629.85

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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.