Home / 947,774.38-1,421,661.76-316,688.26

Finding the Fourth Proportional to 947,774.38, 1,421,661.76 and 316,688.26

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Solution

The fourth proportional to 947,774.38, 1,421,661.76 and 316,688.26 is: 475,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,774.38 : 1,421,661.76 = 316,688.26 : x
  2. Step 2: Convert to fraction form
    947,774.38/1,421,661.76 = 316,688.26/x
  3. Step 3: Cross multiply
    947,774.38x = 1,421,661.76 × 316,688.26
  4. Step 4: Simplify right side
    947,774.38x = 450,223,581,974.63
  5. Step 5: Solve for x
    x = 450,223,581,974.63/947,774.38
  6. Step 6: Final answer
    x = 475,032.45

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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.