Home / 684,729.80-1,025,126.40-419,009.30

Finding the Fourth Proportional to 684,729.80, 1,025,126.40 and 419,009.30

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Solution

The fourth proportional to 684,729.80, 1,025,126.40 and 419,009.30 is: 627,309.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,729.80 : 1,025,126.40 = 419,009.30 : x
  2. Step 2: Convert to fraction form
    684,729.80/1,025,126.40 = 419,009.30/x
  3. Step 3: Cross multiply
    684,729.80x = 1,025,126.40 × 419,009.30
  4. Step 4: Simplify right side
    684,729.80x = 429,537,495,275.52
  5. Step 5: Solve for x
    x = 429,537,495,275.52/684,729.80
  6. Step 6: Final answer
    x = 627,309.48

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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.