Home / 1,287,457.84-1,776,281.20-743,521.80

Finding the Fourth Proportional to 1,287,457.84, 1,776,281.20 and 743,521.80

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Solution

The fourth proportional to 1,287,457.84, 1,776,281.20 and 743,521.80 is: 1,025,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,457.84 : 1,776,281.20 = 743,521.80 : x
  2. Step 2: Convert to fraction form
    1,287,457.84/1,776,281.20 = 743,521.80/x
  3. Step 3: Cross multiply
    1,287,457.84x = 1,776,281.20 × 743,521.80
  4. Step 4: Simplify right side
    1,287,457.84x = 1,320,703,795,130.16
  5. Step 5: Solve for x
    x = 1,320,703,795,130.16/1,287,457.84
  6. Step 6: Final answer
    x = 1,025,822.95

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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.