Home / 947,775.75-1,421,663.82-316,689.63

Finding the Fourth Proportional to 947,775.75, 1,421,663.82 and 316,689.63

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Solution

The fourth proportional to 947,775.75, 1,421,663.82 and 316,689.63 is: 475,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,775.75 : 1,421,663.82 = 316,689.63 : x
  2. Step 2: Convert to fraction form
    947,775.75/1,421,663.82 = 316,689.63/x
  3. Step 3: Cross multiply
    947,775.75x = 1,421,663.82 × 316,689.63
  4. Step 4: Simplify right side
    947,775.75x = 450,226,189,140.19
  5. Step 5: Solve for x
    x = 450,226,189,140.19/947,775.75
  6. Step 6: Final answer
    x = 475,034.51

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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.