Home / 670,428.29-1,005,378.92-243,862.85

Finding the Fourth Proportional to 670,428.29, 1,005,378.92 and 243,862.85

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Solution

The fourth proportional to 670,428.29, 1,005,378.92 and 243,862.85 is: 365,698.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,428.29 : 1,005,378.92 = 243,862.85 : x
  2. Step 2: Convert to fraction form
    670,428.29/1,005,378.92 = 243,862.85/x
  3. Step 3: Cross multiply
    670,428.29x = 1,005,378.92 × 243,862.85
  4. Step 4: Simplify right side
    670,428.29x = 245,174,567,541.81
  5. Step 5: Solve for x
    x = 245,174,567,541.81/670,428.29
  6. Step 6: Final answer
    x = 365,698.42

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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.