Home / 712,872.40-1,069,596.60-313,589.20

Finding the Fourth Proportional to 712,872.40, 1,069,596.60 and 313,589.20

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Solution

The fourth proportional to 712,872.40, 1,069,596.60 and 313,589.20 is: 470,510.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,872.40 : 1,069,596.60 = 313,589.20 : x
  2. Step 2: Convert to fraction form
    712,872.40/1,069,596.60 = 313,589.20/x
  3. Step 3: Cross multiply
    712,872.40x = 1,069,596.60 × 313,589.20
  4. Step 4: Simplify right side
    712,872.40x = 335,413,942,116.72
  5. Step 5: Solve for x
    x = 335,413,942,116.72/712,872.40
  6. Step 6: Final answer
    x = 470,510.49

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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.