Home / 909,898.12-1,363,740.31-643,735.36

Finding the Fourth Proportional to 909,898.12, 1,363,740.31 and 643,735.36

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Solution

The fourth proportional to 909,898.12, 1,363,740.31 and 643,735.36 is: 964,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,898.12 : 1,363,740.31 = 643,735.36 : x
  2. Step 2: Convert to fraction form
    909,898.12/1,363,740.31 = 643,735.36/x
  3. Step 3: Cross multiply
    909,898.12x = 1,363,740.31 × 643,735.36
  4. Step 4: Simplify right side
    909,898.12x = 877,887,859,404.36
  5. Step 5: Solve for x
    x = 877,887,859,404.36/909,898.12
  6. Step 6: Final answer
    x = 964,819.95

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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.