Home / 1,369,490.15-1,889,983.88-765,878.15

Finding the Fourth Proportional to 1,369,490.15, 1,889,983.88 and 765,878.15

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Solution

The fourth proportional to 1,369,490.15, 1,889,983.88 and 765,878.15 is: 1,056,960.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,490.15 : 1,889,983.88 = 765,878.15 : x
  2. Step 2: Convert to fraction form
    1,369,490.15/1,889,983.88 = 765,878.15/x
  3. Step 3: Cross multiply
    1,369,490.15x = 1,889,983.88 × 765,878.15
  4. Step 4: Simplify right side
    1,369,490.15x = 1,447,497,357,544.22
  5. Step 5: Solve for x
    x = 1,447,497,357,544.22/1,369,490.15
  6. Step 6: Final answer
    x = 1,056,960.77

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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.