Home / 807,138.96-1,113,959.43-521,490.30

Finding the Fourth Proportional to 807,138.96, 1,113,959.43 and 521,490.30

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Solution

The fourth proportional to 807,138.96, 1,113,959.43 and 521,490.30 is: 719,726.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,138.96 : 1,113,959.43 = 521,490.30 : x
  2. Step 2: Convert to fraction form
    807,138.96/1,113,959.43 = 521,490.30/x
  3. Step 3: Cross multiply
    807,138.96x = 1,113,959.43 × 521,490.30
  4. Step 4: Simplify right side
    807,138.96x = 580,919,037,338.53
  5. Step 5: Solve for x
    x = 580,919,037,338.53/807,138.96
  6. Step 6: Final answer
    x = 719,726.18

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1.5x scale

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.