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Finding the Fourth Proportional to 604,900.20, 907,350.30 and 392,323.80

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Solution

The fourth proportional to 604,900.20, 907,350.30 and 392,323.80 is: 588,485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,900.20 : 907,350.30 = 392,323.80 : x
  2. Step 2: Convert to fraction form
    604,900.20/907,350.30 = 392,323.80/x
  3. Step 3: Cross multiply
    604,900.20x = 907,350.30 × 392,323.80
  4. Step 4: Simplify right side
    604,900.20x = 355,975,117,627.14
  5. Step 5: Solve for x
    x = 355,975,117,627.14/604,900.20
  6. Step 6: Final answer
    x = 588,485.70

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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.