Home / 1,005,172.29-1,387,460.75-643,569.93

Finding the Fourth Proportional to 1,005,172.29, 1,387,460.75 and 643,569.93

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Solution

The fourth proportional to 1,005,172.29, 1,387,460.75 and 643,569.93 is: 888,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,172.29 : 1,387,460.75 = 643,569.93 : x
  2. Step 2: Convert to fraction form
    1,005,172.29/1,387,460.75 = 643,569.93/x
  3. Step 3: Cross multiply
    1,005,172.29x = 1,387,460.75 × 643,569.93
  4. Step 4: Simplify right side
    1,005,172.29x = 892,928,014,537.40
  5. Step 5: Solve for x
    x = 892,928,014,537.40/1,005,172.29
  6. Step 6: Final answer
    x = 888,333.30

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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.