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Finding the Fourth Proportional to 561,228.69, 774,494.28 and 306,581.70

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Solution

The fourth proportional to 561,228.69, 774,494.28 and 306,581.70 is: 423,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,228.69 : 774,494.28 = 306,581.70 : x
  2. Step 2: Convert to fraction form
    561,228.69/774,494.28 = 306,581.70/x
  3. Step 3: Cross multiply
    561,228.69x = 774,494.28 × 306,581.70
  4. Step 4: Simplify right side
    561,228.69x = 237,445,773,002.68
  5. Step 5: Solve for x
    x = 237,445,773,002.68/561,228.69
  6. Step 6: Final answer
    x = 423,082.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.