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Finding the Fourth Proportional to 561,937.20, 842,905.80 and 558,000.60

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Solution

The fourth proportional to 561,937.20, 842,905.80 and 558,000.60 is: 837,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,937.20 : 842,905.80 = 558,000.60 : x
  2. Step 2: Convert to fraction form
    561,937.20/842,905.80 = 558,000.60/x
  3. Step 3: Cross multiply
    561,937.20x = 842,905.80 × 558,000.60
  4. Step 4: Simplify right side
    561,937.20x = 470,341,942,143.48
  5. Step 5: Solve for x
    x = 470,341,942,143.48/561,937.20
  6. Step 6: Final answer
    x = 837,000.90

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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.