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Finding the Fourth Proportional to 495,245.70, 742,868.55 and 465,721.20

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Solution

The fourth proportional to 495,245.70, 742,868.55 and 465,721.20 is: 698,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,245.70 : 742,868.55 = 465,721.20 : x
  2. Step 2: Convert to fraction form
    495,245.70/742,868.55 = 465,721.20/x
  3. Step 3: Cross multiply
    495,245.70x = 742,868.55 × 465,721.20
  4. Step 4: Simplify right side
    495,245.70x = 345,969,632,548.26
  5. Step 5: Solve for x
    x = 345,969,632,548.26/495,245.70
  6. Step 6: Final answer
    x = 698,581.80

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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.