Home / 1,247,685.84-1,721,810.40-674,730

Finding the Fourth Proportional to 1,247,685.84, 1,721,810.40 and 674,730

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Solution

The fourth proportional to 1,247,685.84, 1,721,810.40 and 674,730 is: 931,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,685.84 : 1,721,810.40 = 674,730 : x
  2. Step 2: Convert to fraction form
    1,247,685.84/1,721,810.40 = 674,730/x
  3. Step 3: Cross multiply
    1,247,685.84x = 1,721,810.40 × 674,730
  4. Step 4: Simplify right side
    1,247,685.84x = 1,161,757,131,192
  5. Step 5: Solve for x
    x = 1,161,757,131,192/1,247,685.84
  6. Step 6: Final answer
    x = 931,129.53

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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.