Home / 910,870.40-1,366,305.60-279,783.20

Finding the Fourth Proportional to 910,870.40, 1,366,305.60 and 279,783.20

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Solution

The fourth proportional to 910,870.40, 1,366,305.60 and 279,783.20 is: 419,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,870.40 : 1,366,305.60 = 279,783.20 : x
  2. Step 2: Convert to fraction form
    910,870.40/1,366,305.60 = 279,783.20/x
  3. Step 3: Cross multiply
    910,870.40x = 1,366,305.60 × 279,783.20
  4. Step 4: Simplify right side
    910,870.40x = 382,269,352,945.92
  5. Step 5: Solve for x
    x = 382,269,352,945.92/910,870.40
  6. Step 6: Final answer
    x = 419,674.80

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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.