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Finding the Fourth Proportional to 665,794.89, 918,538.79 and 424,034.19

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Solution

The fourth proportional to 665,794.89, 918,538.79 and 424,034.19 is: 585,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,794.89 : 918,538.79 = 424,034.19 : x
  2. Step 2: Convert to fraction form
    665,794.89/918,538.79 = 424,034.19/x
  3. Step 3: Cross multiply
    665,794.89x = 918,538.79 × 424,034.19
  4. Step 4: Simplify right side
    665,794.89x = 389,491,849,681.06
  5. Step 5: Solve for x
    x = 389,491,849,681.06/665,794.89
  6. Step 6: Final answer
    x = 585,002.76

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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.