Home / 1,399,695.41-1,931,456.46-779,453.71

Finding the Fourth Proportional to 1,399,695.41, 1,931,456.46 and 779,453.71

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Solution

The fourth proportional to 1,399,695.41, 1,931,456.46 and 779,453.71 is: 1,075,577.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,695.41 : 1,931,456.46 = 779,453.71 : x
  2. Step 2: Convert to fraction form
    1,399,695.41/1,931,456.46 = 779,453.71/x
  3. Step 3: Cross multiply
    1,399,695.41x = 1,931,456.46 × 779,453.71
  4. Step 4: Simplify right side
    1,399,695.41x = 1,505,480,893,793.18
  5. Step 5: Solve for x
    x = 1,505,480,893,793.18/1,399,695.41
  6. Step 6: Final answer
    x = 1,075,577.50

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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.