Home / 1,427,008.05-1,969,256.40-782,427.15

Finding the Fourth Proportional to 1,427,008.05, 1,969,256.40 and 782,427.15

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Solution

The fourth proportional to 1,427,008.05, 1,969,256.40 and 782,427.15 is: 1,079,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,008.05 : 1,969,256.40 = 782,427.15 : x
  2. Step 2: Convert to fraction form
    1,427,008.05/1,969,256.40 = 782,427.15/x
  3. Step 3: Cross multiply
    1,427,008.05x = 1,969,256.40 × 782,427.15
  4. Step 4: Simplify right side
    1,427,008.05x = 1,540,799,672,671.26
  5. Step 5: Solve for x
    x = 1,540,799,672,671.26/1,427,008.05
  6. Step 6: Final answer
    x = 1,079,741.40

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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.