Home / 1,218,725.42-1,681,820.40-674,849.52

Finding the Fourth Proportional to 1,218,725.42, 1,681,820.40 and 674,849.52

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Solution

The fourth proportional to 1,218,725.42, 1,681,820.40 and 674,849.52 is: 931,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,725.42 : 1,681,820.40 = 674,849.52 : x
  2. Step 2: Convert to fraction form
    1,218,725.42/1,681,820.40 = 674,849.52/x
  3. Step 3: Cross multiply
    1,218,725.42x = 1,681,820.40 × 674,849.52
  4. Step 4: Simplify right side
    1,218,725.42x = 1,134,975,689,666.21
  5. Step 5: Solve for x
    x = 1,134,975,689,666.21/1,218,725.42
  6. Step 6: Final answer
    x = 931,280.89

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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.