Home / 1,013,990.47-1,399,306.87-561,281.47

Finding the Fourth Proportional to 1,013,990.47, 1,399,306.87 and 561,281.47

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Solution

The fourth proportional to 1,013,990.47, 1,399,306.87 and 561,281.47 is: 774,568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013,990.47 : 1,399,306.87 = 561,281.47 : x
  2. Step 2: Convert to fraction form
    1,013,990.47/1,399,306.87 = 561,281.47/x
  3. Step 3: Cross multiply
    1,013,990.47x = 1,399,306.87 × 561,281.47
  4. Step 4: Simplify right side
    1,013,990.47x = 785,405,016,974.70
  5. Step 5: Solve for x
    x = 785,405,016,974.70/1,013,990.47
  6. Step 6: Final answer
    x = 774,568.44

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1.5x scale

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.