Home / 743,046.30-1,025,403.80-420,756.30

Finding the Fourth Proportional to 743,046.30, 1,025,403.80 and 420,756.30

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Solution

The fourth proportional to 743,046.30, 1,025,403.80 and 420,756.30 is: 580,643.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,046.30 : 1,025,403.80 = 420,756.30 : x
  2. Step 2: Convert to fraction form
    743,046.30/1,025,403.80 = 420,756.30/x
  3. Step 3: Cross multiply
    743,046.30x = 1,025,403.80 × 420,756.30
  4. Step 4: Simplify right side
    743,046.30x = 431,445,106,790.16
  5. Step 5: Solve for x
    x = 431,445,106,790.16/743,046.30
  6. Step 6: Final answer
    x = 580,643.64

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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.