Home / 712,315.14-982,994.67-390,025.14

Finding the Fourth Proportional to 712,315.14, 982,994.67 and 390,025.14

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Solution

The fourth proportional to 712,315.14, 982,994.67 and 390,025.14 is: 538,234.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,315.14 : 982,994.67 = 390,025.14 : x
  2. Step 2: Convert to fraction form
    712,315.14/982,994.67 = 390,025.14/x
  3. Step 3: Cross multiply
    712,315.14x = 982,994.67 × 390,025.14
  4. Step 4: Simplify right side
    712,315.14x = 383,392,633,786.00
  5. Step 5: Solve for x
    x = 383,392,633,786.00/712,315.14
  6. Step 6: Final answer
    x = 538,234.57

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.