Home / 745,934.40-1,029,401.28-406,402.56

Finding the Fourth Proportional to 745,934.40, 1,029,401.28 and 406,402.56

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Solution

The fourth proportional to 745,934.40, 1,029,401.28 and 406,402.56 is: 560,841.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,934.40 : 1,029,401.28 = 406,402.56 : x
  2. Step 2: Convert to fraction form
    745,934.40/1,029,401.28 = 406,402.56/x
  3. Step 3: Cross multiply
    745,934.40x = 1,029,401.28 × 406,402.56
  4. Step 4: Simplify right side
    745,934.40x = 418,351,315,459.28
  5. Step 5: Solve for x
    x = 418,351,315,459.28/745,934.40
  6. Step 6: Final answer
    x = 560,841.97

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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.