Home / 771,280.60-1,154,588.10-687,299.80

Finding the Fourth Proportional to 771,280.60, 1,154,588.10 and 687,299.80

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Solution

The fourth proportional to 771,280.60, 1,154,588.10 and 687,299.80 is: 1,028,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,280.60 : 1,154,588.10 = 687,299.80 : x
  2. Step 2: Convert to fraction form
    771,280.60/1,154,588.10 = 687,299.80/x
  3. Step 3: Cross multiply
    771,280.60x = 1,154,588.10 × 687,299.80
  4. Step 4: Simplify right side
    771,280.60x = 793,548,170,212.38
  5. Step 5: Solve for x
    x = 793,548,170,212.38/771,280.60
  6. Step 6: Final answer
    x = 1,028,870.91

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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.