Home / 829,990.78-1,145,371.72-507,677.20

Finding the Fourth Proportional to 829,990.78, 1,145,371.72 and 507,677.20

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Solution

The fourth proportional to 829,990.78, 1,145,371.72 and 507,677.20 is: 700,585.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,990.78 : 1,145,371.72 = 507,677.20 : x
  2. Step 2: Convert to fraction form
    829,990.78/1,145,371.72 = 507,677.20/x
  3. Step 3: Cross multiply
    829,990.78x = 1,145,371.72 × 507,677.20
  4. Step 4: Simplify right side
    829,990.78x = 581,479,107,768.78
  5. Step 5: Solve for x
    x = 581,479,107,768.78/829,990.78
  6. Step 6: Final answer
    x = 700,585.02

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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.