Home / 811,809.40-1,220,046.90-709,166.20

Finding the Fourth Proportional to 811,809.40, 1,220,046.90 and 709,166.20

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Solution

The fourth proportional to 811,809.40, 1,220,046.90 and 709,166.20 is: 1,065,787.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,809.40 : 1,220,046.90 = 709,166.20 : x
  2. Step 2: Convert to fraction form
    811,809.40/1,220,046.90 = 709,166.20/x
  3. Step 3: Cross multiply
    811,809.40x = 1,220,046.90 × 709,166.20
  4. Step 4: Simplify right side
    811,809.40x = 865,216,023,894.78
  5. Step 5: Solve for x
    x = 865,216,023,894.78/811,809.40
  6. Step 6: Final answer
    x = 1,065,787.15

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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.