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Finding the Fourth Proportional to 575,138.40, 862,707.60 and 291,703.20

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Solution

The fourth proportional to 575,138.40, 862,707.60 and 291,703.20 is: 437,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,138.40 : 862,707.60 = 291,703.20 : x
  2. Step 2: Convert to fraction form
    575,138.40/862,707.60 = 291,703.20/x
  3. Step 3: Cross multiply
    575,138.40x = 862,707.60 × 291,703.20
  4. Step 4: Simplify right side
    575,138.40x = 251,654,567,584.32
  5. Step 5: Solve for x
    x = 251,654,567,584.32/575,138.40
  6. Step 6: Final answer
    x = 437,554.80

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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.