Home / 771,539.20-1,157,308.80-210,630.40

Finding the Fourth Proportional to 771,539.20, 1,157,308.80 and 210,630.40

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Solution

The fourth proportional to 771,539.20, 1,157,308.80 and 210,630.40 is: 315,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,539.20 : 1,157,308.80 = 210,630.40 : x
  2. Step 2: Convert to fraction form
    771,539.20/1,157,308.80 = 210,630.40/x
  3. Step 3: Cross multiply
    771,539.20x = 1,157,308.80 × 210,630.40
  4. Step 4: Simplify right side
    771,539.20x = 243,764,415,467.52
  5. Step 5: Solve for x
    x = 243,764,415,467.52/771,539.20
  6. Step 6: Final answer
    x = 315,945.60

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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.