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Finding the Fourth Proportional to 613,269.40, 919,904.10 and 347,548.90

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Solution

The fourth proportional to 613,269.40, 919,904.10 and 347,548.90 is: 521,323.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,269.40 : 919,904.10 = 347,548.90 : x
  2. Step 2: Convert to fraction form
    613,269.40/919,904.10 = 347,548.90/x
  3. Step 3: Cross multiply
    613,269.40x = 919,904.10 × 347,548.90
  4. Step 4: Simplify right side
    613,269.40x = 319,711,658,060.49
  5. Step 5: Solve for x
    x = 319,711,658,060.49/613,269.40
  6. Step 6: Final answer
    x = 521,323.35

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Double scale
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Similar ratio
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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.