Home / 1,105,146.64-1,525,099.92-621,712

Finding the Fourth Proportional to 1,105,146.64, 1,525,099.92 and 621,712

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Solution

The fourth proportional to 1,105,146.64, 1,525,099.92 and 621,712 is: 857,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,146.64 : 1,525,099.92 = 621,712 : x
  2. Step 2: Convert to fraction form
    1,105,146.64/1,525,099.92 = 621,712/x
  3. Step 3: Cross multiply
    1,105,146.64x = 1,525,099.92 × 621,712
  4. Step 4: Simplify right side
    1,105,146.64x = 948,172,921,463.04
  5. Step 5: Solve for x
    x = 948,172,921,463.04/1,105,146.64
  6. Step 6: Final answer
    x = 857,961.19

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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.