Home / 617,927.40-926,891.10-380,500.20

Finding the Fourth Proportional to 617,927.40, 926,891.10 and 380,500.20

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Solution

The fourth proportional to 617,927.40, 926,891.10 and 380,500.20 is: 570,750.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,927.40 : 926,891.10 = 380,500.20 : x
  2. Step 2: Convert to fraction form
    617,927.40/926,891.10 = 380,500.20/x
  3. Step 3: Cross multiply
    617,927.40x = 926,891.10 × 380,500.20
  4. Step 4: Simplify right side
    617,927.40x = 352,682,248,928.22
  5. Step 5: Solve for x
    x = 352,682,248,928.22/617,927.40
  6. Step 6: Final answer
    x = 570,750.30

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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.