Home / 1,285,280.40-1,773,687.12-712,357.56

Finding the Fourth Proportional to 1,285,280.40, 1,773,687.12 and 712,357.56

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Solution

The fourth proportional to 1,285,280.40, 1,773,687.12 and 712,357.56 is: 983,053.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,280.40 : 1,773,687.12 = 712,357.56 : x
  2. Step 2: Convert to fraction form
    1,285,280.40/1,773,687.12 = 712,357.56/x
  3. Step 3: Cross multiply
    1,285,280.40x = 1,773,687.12 × 712,357.56
  4. Step 4: Simplify right side
    1,285,280.40x = 1,263,499,429,006.63
  5. Step 5: Solve for x
    x = 1,263,499,429,006.63/1,285,280.40
  6. Step 6: Final answer
    x = 983,053.53

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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.