Home / 1,186,878.74-1,637,893.04-643,018.28

Finding the Fourth Proportional to 1,186,878.74, 1,637,893.04 and 643,018.28

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Solution

The fourth proportional to 1,186,878.74, 1,637,893.04 and 643,018.28 is: 887,365.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,878.74 : 1,637,893.04 = 643,018.28 : x
  2. Step 2: Convert to fraction form
    1,186,878.74/1,637,893.04 = 643,018.28/x
  3. Step 3: Cross multiply
    1,186,878.74x = 1,637,893.04 × 643,018.28
  4. Step 4: Simplify right side
    1,186,878.74x = 1,053,195,154,000.21
  5. Step 5: Solve for x
    x = 1,053,195,154,000.21/1,186,878.74
  6. Step 6: Final answer
    x = 887,365.43

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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.