Home / 743,064.03-1,025,428.28-420,774.04

Finding the Fourth Proportional to 743,064.03, 1,025,428.28 and 420,774.04

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Solution

The fourth proportional to 743,064.03, 1,025,428.28 and 420,774.04 is: 580,668.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,064.03 : 1,025,428.28 = 420,774.04 : x
  2. Step 2: Convert to fraction form
    743,064.03/1,025,428.28 = 420,774.04/x
  3. Step 3: Cross multiply
    743,064.03x = 1,025,428.28 × 420,774.04
  4. Step 4: Simplify right side
    743,064.03x = 431,473,594,978.71
  5. Step 5: Solve for x
    x = 431,473,594,978.71/743,064.03
  6. Step 6: Final answer
    x = 580,668.13

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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.