Home / 1,421,422.36-1,961,373.36-912,813.64

Finding the Fourth Proportional to 1,421,422.36, 1,961,373.36 and 912,813.64

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Solution

The fourth proportional to 1,421,422.36, 1,961,373.36 and 912,813.64 is: 1,259,561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,422.36 : 1,961,373.36 = 912,813.64 : x
  2. Step 2: Convert to fraction form
    1,421,422.36/1,961,373.36 = 912,813.64/x
  3. Step 3: Cross multiply
    1,421,422.36x = 1,961,373.36 × 912,813.64
  4. Step 4: Simplify right side
    1,421,422.36x = 1,790,368,356,140.63
  5. Step 5: Solve for x
    x = 1,790,368,356,140.63/1,421,422.36
  6. Step 6: Final answer
    x = 1,259,561.13

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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.