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Finding the Fourth Proportional to 648,362.80, 971,304.90 and 348,743.80

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Solution

The fourth proportional to 648,362.80, 971,304.90 and 348,743.80 is: 522,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,362.80 : 971,304.90 = 348,743.80 : x
  2. Step 2: Convert to fraction form
    648,362.80/971,304.90 = 348,743.80/x
  3. Step 3: Cross multiply
    648,362.80x = 971,304.90 × 348,743.80
  4. Step 4: Simplify right side
    648,362.80x = 338,736,561,784.62
  5. Step 5: Solve for x
    x = 338,736,561,784.62/648,362.80
  6. Step 6: Final answer
    x = 522,449.10

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1.5x scale

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.