Home / 1,428,166.90-1,970,870.16-816,332.73

Finding the Fourth Proportional to 1,428,166.90, 1,970,870.16 and 816,332.73

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Solution

The fourth proportional to 1,428,166.90, 1,970,870.16 and 816,332.73 is: 1,126,539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,166.90 : 1,970,870.16 = 816,332.73 : x
  2. Step 2: Convert to fraction form
    1,428,166.90/1,970,870.16 = 816,332.73/x
  3. Step 3: Cross multiply
    1,428,166.90x = 1,970,870.16 × 816,332.73
  4. Step 4: Simplify right side
    1,428,166.90x = 1,608,885,818,188.34
  5. Step 5: Solve for x
    x = 1,608,885,818,188.34/1,428,166.90
  6. Step 6: Final answer
    x = 1,126,539.07

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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.