Home / 1,108,485.03-1,529,747.13-643,303.10

Finding the Fourth Proportional to 1,108,485.03, 1,529,747.13 and 643,303.10

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Solution

The fourth proportional to 1,108,485.03, 1,529,747.13 and 643,303.10 is: 887,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,485.03 : 1,529,747.13 = 643,303.10 : x
  2. Step 2: Convert to fraction form
    1,108,485.03/1,529,747.13 = 643,303.10/x
  3. Step 3: Cross multiply
    1,108,485.03x = 1,529,747.13 × 643,303.10
  4. Step 4: Simplify right side
    1,108,485.03x = 984,091,070,945.10
  5. Step 5: Solve for x
    x = 984,091,070,945.10/1,108,485.03
  6. Step 6: Final answer
    x = 887,780.21

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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.