Home / 745,842.72-1,029,337.30-455,438.28

Finding the Fourth Proportional to 745,842.72, 1,029,337.30 and 455,438.28

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Solution

The fourth proportional to 745,842.72, 1,029,337.30 and 455,438.28 is: 628,550.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,842.72 : 1,029,337.30 = 455,438.28 : x
  2. Step 2: Convert to fraction form
    745,842.72/1,029,337.30 = 455,438.28/x
  3. Step 3: Cross multiply
    745,842.72x = 1,029,337.30 × 455,438.28
  4. Step 4: Simplify right side
    745,842.72x = 468,799,609,451.84
  5. Step 5: Solve for x
    x = 468,799,609,451.84/745,842.72
  6. Step 6: Final answer
    x = 628,550.22

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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.