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Finding the Fourth Proportional to 648,779.60, 973,169.40 and 228,000.80

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Solution

The fourth proportional to 648,779.60, 973,169.40 and 228,000.80 is: 342,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,779.60 : 973,169.40 = 228,000.80 : x
  2. Step 2: Convert to fraction form
    648,779.60/973,169.40 = 228,000.80/x
  3. Step 3: Cross multiply
    648,779.60x = 973,169.40 × 228,000.80
  4. Step 4: Simplify right side
    648,779.60x = 221,883,401,735.52
  5. Step 5: Solve for x
    x = 221,883,401,735.52/648,779.60
  6. Step 6: Final answer
    x = 342,001.20

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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.