Home / 785,828.20-1,178,742.30-260,516.20

Finding the Fourth Proportional to 785,828.20, 1,178,742.30 and 260,516.20

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Solution

The fourth proportional to 785,828.20, 1,178,742.30 and 260,516.20 is: 390,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,828.20 : 1,178,742.30 = 260,516.20 : x
  2. Step 2: Convert to fraction form
    785,828.20/1,178,742.30 = 260,516.20/x
  3. Step 3: Cross multiply
    785,828.20x = 1,178,742.30 × 260,516.20
  4. Step 4: Simplify right side
    785,828.20x = 307,081,464,775.26
  5. Step 5: Solve for x
    x = 307,081,464,775.26/785,828.20
  6. Step 6: Final answer
    x = 390,774.30

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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.