Home / 1,355,781.52-1,871,037.12-812,005.84

Finding the Fourth Proportional to 1,355,781.52, 1,871,037.12 and 812,005.84

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Solution

The fourth proportional to 1,355,781.52, 1,871,037.12 and 812,005.84 is: 1,120,603.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,781.52 : 1,871,037.12 = 812,005.84 : x
  2. Step 2: Convert to fraction form
    1,355,781.52/1,871,037.12 = 812,005.84/x
  3. Step 3: Cross multiply
    1,355,781.52x = 1,871,037.12 × 812,005.84
  4. Step 4: Simplify right side
    1,355,781.52x = 1,519,293,068,296.78
  5. Step 5: Solve for x
    x = 1,519,293,068,296.78/1,355,781.52
  6. Step 6: Final answer
    x = 1,120,603.17

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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.