Home / 1,421,279.84-1,961,371.32-776,709.92

Finding the Fourth Proportional to 1,421,279.84, 1,961,371.32 and 776,709.92

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Solution

The fourth proportional to 1,421,279.84, 1,961,371.32 and 776,709.92 is: 1,071,862.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,279.84 : 1,961,371.32 = 776,709.92 : x
  2. Step 2: Convert to fraction form
    1,421,279.84/1,961,371.32 = 776,709.92/x
  3. Step 3: Cross multiply
    1,421,279.84x = 1,961,371.32 × 776,709.92
  4. Step 4: Simplify right side
    1,421,279.84x = 1,523,416,561,047.49
  5. Step 5: Solve for x
    x = 1,523,416,561,047.49/1,421,279.84
  6. Step 6: Final answer
    x = 1,071,862.50

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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.