Home / 1,341,878.40-1,851,789.60-768,916.80

Finding the Fourth Proportional to 1,341,878.40, 1,851,789.60 and 768,916.80

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Solution

The fourth proportional to 1,341,878.40, 1,851,789.60 and 768,916.80 is: 1,061,103.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341,878.40 : 1,851,789.60 = 768,916.80 : x
  2. Step 2: Convert to fraction form
    1,341,878.40/1,851,789.60 = 768,916.80/x
  3. Step 3: Cross multiply
    1,341,878.40x = 1,851,789.60 × 768,916.80
  4. Step 4: Simplify right side
    1,341,878.40x = 1,423,872,133,505.28
  5. Step 5: Solve for x
    x = 1,423,872,133,505.28/1,341,878.40
  6. Step 6: Final answer
    x = 1,061,103.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.