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Finding the Fourth Proportional to 561,958.40, 842,937.60 and 558,459.20

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Solution

The fourth proportional to 561,958.40, 842,937.60 and 558,459.20 is: 837,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,958.40 : 842,937.60 = 558,459.20 : x
  2. Step 2: Convert to fraction form
    561,958.40/842,937.60 = 558,459.20/x
  3. Step 3: Cross multiply
    561,958.40x = 842,937.60 × 558,459.20
  4. Step 4: Simplify right side
    561,958.40x = 470,746,257,745.92
  5. Step 5: Solve for x
    x = 470,746,257,745.92/561,958.40
  6. Step 6: Final answer
    x = 837,688.80

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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.