Home / 648,779.10-973,168.65-228,000.30

Finding the Fourth Proportional to 648,779.10, 973,168.65 and 228,000.30

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Solution

The fourth proportional to 648,779.10, 973,168.65 and 228,000.30 is: 342,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,779.10 : 973,168.65 = 228,000.30 : x
  2. Step 2: Convert to fraction form
    648,779.10/973,168.65 = 228,000.30/x
  3. Step 3: Cross multiply
    648,779.10x = 973,168.65 × 228,000.30
  4. Step 4: Simplify right side
    648,779.10x = 221,882,744,150.60
  5. Step 5: Solve for x
    x = 221,882,744,150.60/648,779.10
  6. Step 6: Final answer
    x = 342,000.45

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Half scale
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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.