Home / 1,315,457-1,815,332.28-711,845

Finding the Fourth Proportional to 1,315,457, 1,815,332.28 and 711,845

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Solution

The fourth proportional to 1,315,457, 1,815,332.28 and 711,845 is: 982,346.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,457 : 1,815,332.28 = 711,845 : x
  2. Step 2: Convert to fraction form
    1,315,457/1,815,332.28 = 711,845/x
  3. Step 3: Cross multiply
    1,315,457x = 1,815,332.28 × 711,845
  4. Step 4: Simplify right side
    1,315,457x = 1,292,235,206,856.60
  5. Step 5: Solve for x
    x = 1,292,235,206,856.60/1,315,457
  6. Step 6: Final answer
    x = 982,346.98

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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.