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Finding the Fourth Proportional to 604,832.80, 907,249.20 and 392,256.40

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Solution

The fourth proportional to 604,832.80, 907,249.20 and 392,256.40 is: 588,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,832.80 : 907,249.20 = 392,256.40 : x
  2. Step 2: Convert to fraction form
    604,832.80/907,249.20 = 392,256.40/x
  3. Step 3: Cross multiply
    604,832.80x = 907,249.20 × 392,256.40
  4. Step 4: Simplify right side
    604,832.80x = 355,874,305,094.88
  5. Step 5: Solve for x
    x = 355,874,305,094.88/604,832.80
  6. Step 6: Final answer
    x = 588,384.60

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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.