Home / 684,719.80-1,025,111.40-418,999.30

Finding the Fourth Proportional to 684,719.80, 1,025,111.40 and 418,999.30

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Solution

The fourth proportional to 684,719.80, 1,025,111.40 and 418,999.30 is: 627,294.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,719.80 : 1,025,111.40 = 418,999.30 : x
  2. Step 2: Convert to fraction form
    684,719.80/1,025,111.40 = 418,999.30/x
  3. Step 3: Cross multiply
    684,719.80x = 1,025,111.40 × 418,999.30
  4. Step 4: Simplify right side
    684,719.80x = 429,520,959,022.02
  5. Step 5: Solve for x
    x = 429,520,959,022.02/684,719.80
  6. Step 6: Final answer
    x = 627,294.49

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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.