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Finding the Fourth Proportional to 607,279.80, 910,919.70 and 561,660.60

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Solution

The fourth proportional to 607,279.80, 910,919.70 and 561,660.60 is: 842,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,279.80 : 910,919.70 = 561,660.60 : x
  2. Step 2: Convert to fraction form
    607,279.80/910,919.70 = 561,660.60/x
  3. Step 3: Cross multiply
    607,279.80x = 910,919.70 × 561,660.60
  4. Step 4: Simplify right side
    607,279.80x = 511,627,705,253.82
  5. Step 5: Solve for x
    x = 511,627,705,253.82/607,279.80
  6. Step 6: Final answer
    x = 842,490.90

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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.