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Finding the Fourth Proportional to 654,300.34, 902,982 and 399,699.52

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Solution

The fourth proportional to 654,300.34, 902,982 and 399,699.52 is: 551,614.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,300.34 : 902,982 = 399,699.52 : x
  2. Step 2: Convert to fraction form
    654,300.34/902,982 = 399,699.52/x
  3. Step 3: Cross multiply
    654,300.34x = 902,982 × 399,699.52
  4. Step 4: Simplify right side
    654,300.34x = 360,921,471,968.64
  5. Step 5: Solve for x
    x = 360,921,471,968.64/654,300.34
  6. Step 6: Final answer
    x = 551,614.37

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1.5x scale

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.