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Finding the Fourth Proportional to 812,794.80, 1,216,859.40 and 497,866.80

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Solution

The fourth proportional to 812,794.80, 1,216,859.40 and 497,866.80 is: 745,371.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,794.80 : 1,216,859.40 = 497,866.80 : x
  2. Step 2: Convert to fraction form
    812,794.80/1,216,859.40 = 497,866.80/x
  3. Step 3: Cross multiply
    812,794.80x = 1,216,859.40 × 497,866.80
  4. Step 4: Simplify right side
    812,794.80x = 605,833,895,527.92
  5. Step 5: Solve for x
    x = 605,833,895,527.92/812,794.80
  6. Step 6: Final answer
    x = 745,371.27

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1.5x scale

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.