Home / 774,773.66-1,069,314.54-645,507.13

Finding the Fourth Proportional to 774,773.66, 1,069,314.54 and 645,507.13

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Solution

The fourth proportional to 774,773.66, 1,069,314.54 and 645,507.13 is: 890,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,773.66 : 1,069,314.54 = 645,507.13 : x
  2. Step 2: Convert to fraction form
    774,773.66/1,069,314.54 = 645,507.13/x
  3. Step 3: Cross multiply
    774,773.66x = 1,069,314.54 × 645,507.13
  4. Step 4: Simplify right side
    774,773.66x = 690,250,159,782.67
  5. Step 5: Solve for x
    x = 690,250,159,782.67/774,773.66
  6. Step 6: Final answer
    x = 890,905.56

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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.