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Finding the Fourth Proportional to 661,266.79, 912,538.05 and 370,878.29

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Solution

The fourth proportional to 661,266.79, 912,538.05 and 370,878.29 is: 511,806.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,266.79 : 912,538.05 = 370,878.29 : x
  2. Step 2: Convert to fraction form
    661,266.79/912,538.05 = 370,878.29/x
  3. Step 3: Cross multiply
    661,266.79x = 912,538.05 × 370,878.29
  4. Step 4: Simplify right side
    661,266.79x = 338,440,556,231.69
  5. Step 5: Solve for x
    x = 338,440,556,231.69/661,266.79
  6. Step 6: Final answer
    x = 511,806.37

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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.