Home / 840,490.80-1,259,861.40-460,827.60

Finding the Fourth Proportional to 840,490.80, 1,259,861.40 and 460,827.60

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Solution

The fourth proportional to 840,490.80, 1,259,861.40 and 460,827.60 is: 690,761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,490.80 : 1,259,861.40 = 460,827.60 : x
  2. Step 2: Convert to fraction form
    840,490.80/1,259,861.40 = 460,827.60/x
  3. Step 3: Cross multiply
    840,490.80x = 1,259,861.40 × 460,827.60
  4. Step 4: Simplify right side
    840,490.80x = 580,578,905,294.64
  5. Step 5: Solve for x
    x = 580,578,905,294.64/840,490.80
  6. Step 6: Final answer
    x = 690,761.76

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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.