Home / 742,979.78-1,114,236.28-316,511.13

Finding the Fourth Proportional to 742,979.78, 1,114,236.28 and 316,511.13

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Solution

The fourth proportional to 742,979.78, 1,114,236.28 and 316,511.13 is: 474,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,979.78 : 1,114,236.28 = 316,511.13 : x
  2. Step 2: Convert to fraction form
    742,979.78/1,114,236.28 = 316,511.13/x
  3. Step 3: Cross multiply
    742,979.78x = 1,114,236.28 × 316,511.13
  4. Step 4: Simplify right side
    742,979.78x = 352,668,184,069.80
  5. Step 5: Solve for x
    x = 352,668,184,069.80/742,979.78
  6. Step 6: Final answer
    x = 474,667.27

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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.