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Finding the Fourth Proportional to 561,207.90, 774,454.32 and 306,560.10

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Solution

The fourth proportional to 561,207.90, 774,454.32 and 306,560.10 is: 423,046.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,207.90 : 774,454.32 = 306,560.10 : x
  2. Step 2: Convert to fraction form
    561,207.90/774,454.32 = 306,560.10/x
  3. Step 3: Cross multiply
    561,207.90x = 774,454.32 × 306,560.10
  4. Step 4: Simplify right side
    561,207.90x = 237,416,793,784.63
  5. Step 5: Solve for x
    x = 237,416,793,784.63/561,207.90
  6. Step 6: Final answer
    x = 423,046.07

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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.