Home / 1,007,938.55-1,390,955.21-555,229.55

Finding the Fourth Proportional to 1,007,938.55, 1,390,955.21 and 555,229.55

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Solution

The fourth proportional to 1,007,938.55, 1,390,955.21 and 555,229.55 is: 766,216.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,938.55 : 1,390,955.21 = 555,229.55 : x
  2. Step 2: Convert to fraction form
    1,007,938.55/1,390,955.21 = 555,229.55/x
  3. Step 3: Cross multiply
    1,007,938.55x = 1,390,955.21 × 555,229.55
  4. Step 4: Simplify right side
    1,007,938.55x = 772,299,425,587.53
  5. Step 5: Solve for x
    x = 772,299,425,587.53/1,007,938.55
  6. Step 6: Final answer
    x = 766,216.78

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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.