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Finding the Fourth Proportional to 1,266,938.02, 1,748,375.21 and 693,987.76

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Solution

The fourth proportional to 1,266,938.02, 1,748,375.21 and 693,987.76 is: 957,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,938.02 : 1,748,375.21 = 693,987.76 : x
  2. Step 2: Convert to fraction form
    1,266,938.02/1,748,375.21 = 693,987.76/x
  3. Step 3: Cross multiply
    1,266,938.02x = 1,748,375.21 × 693,987.76
  4. Step 4: Simplify right side
    1,266,938.02x = 1,213,350,995,627.43
  5. Step 5: Solve for x
    x = 1,213,350,995,627.43/1,266,938.02
  6. Step 6: Final answer
    x = 957,703.52

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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.