Home / 743,048.30-1,025,406.55-420,758.30

Finding the Fourth Proportional to 743,048.30, 1,025,406.55 and 420,758.30

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Solution

The fourth proportional to 743,048.30, 1,025,406.55 and 420,758.30 is: 580,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,048.30 : 1,025,406.55 = 420,758.30 : x
  2. Step 2: Convert to fraction form
    743,048.30/1,025,406.55 = 420,758.30/x
  3. Step 3: Cross multiply
    743,048.30x = 1,025,406.55 × 420,758.30
  4. Step 4: Simplify right side
    743,048.30x = 431,448,316,786.87
  5. Step 5: Solve for x
    x = 431,448,316,786.87/743,048.30
  6. Step 6: Final answer
    x = 580,646.40

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Double scale
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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.