Home / 745,978.23-1,029,449.95-406,446.48

Finding the Fourth Proportional to 745,978.23, 1,029,449.95 and 406,446.48

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Solution

The fourth proportional to 745,978.23, 1,029,449.95 and 406,446.48 is: 560,896.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,978.23 : 1,029,449.95 = 406,446.48 : x
  2. Step 2: Convert to fraction form
    745,978.23/1,029,449.95 = 406,446.48/x
  3. Step 3: Cross multiply
    745,978.23x = 1,029,449.95 × 406,446.48
  4. Step 4: Simplify right side
    745,978.23x = 418,416,307,497.56
  5. Step 5: Solve for x
    x = 418,416,307,497.56/745,978.23
  6. Step 6: Final answer
    x = 560,896.14

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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.