Home / 745,290.64-1,028,449.20-423,007.30

Finding the Fourth Proportional to 745,290.64, 1,028,449.20 and 423,007.30

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Solution

The fourth proportional to 745,290.64, 1,028,449.20 and 423,007.30 is: 583,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,290.64 : 1,028,449.20 = 423,007.30 : x
  2. Step 2: Convert to fraction form
    745,290.64/1,028,449.20 = 423,007.30/x
  3. Step 3: Cross multiply
    745,290.64x = 1,028,449.20 × 423,007.30
  4. Step 4: Simplify right side
    745,290.64x = 435,041,519,279.16
  5. Step 5: Solve for x
    x = 435,041,519,279.16/745,290.64
  6. Step 6: Final answer
    x = 583,720.63

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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.