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Finding the Fourth Proportional to 988,632.12, 1,483,064.82 and 740,888.76

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Solution

The fourth proportional to 988,632.12, 1,483,064.82 and 740,888.76 is: 1,111,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,632.12 : 1,483,064.82 = 740,888.76 : x
  2. Step 2: Convert to fraction form
    988,632.12/1,483,064.82 = 740,888.76/x
  3. Step 3: Cross multiply
    988,632.12x = 1,483,064.82 × 740,888.76
  4. Step 4: Simplify right side
    988,632.12x = 1,098,786,055,489.42
  5. Step 5: Solve for x
    x = 1,098,786,055,489.42/988,632.12
  6. Step 6: Final answer
    x = 1,111,420.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.