Home / 743,127.92-1,025,528.32-420,829.28

Finding the Fourth Proportional to 743,127.92, 1,025,528.32 and 420,829.28

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Solution

The fourth proportional to 743,127.92, 1,025,528.32 and 420,829.28 is: 580,751.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,127.92 : 1,025,528.32 = 420,829.28 : x
  2. Step 2: Convert to fraction form
    743,127.92/1,025,528.32 = 420,829.28/x
  3. Step 3: Cross multiply
    743,127.92x = 1,025,528.32 × 420,829.28
  4. Step 4: Simplify right side
    743,127.92x = 431,572,344,525.21
  5. Step 5: Solve for x
    x = 431,572,344,525.21/743,127.92
  6. Step 6: Final answer
    x = 580,751.08

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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.