Home / 1,421,965.72-1,962,319.63-777,385.92

Finding the Fourth Proportional to 1,421,965.72, 1,962,319.63 and 777,385.92

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Solution

The fourth proportional to 1,421,965.72, 1,962,319.63 and 777,385.92 is: 1,072,796.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,965.72 : 1,962,319.63 = 777,385.92 : x
  2. Step 2: Convert to fraction form
    1,421,965.72/1,962,319.63 = 777,385.92/x
  3. Step 3: Cross multiply
    1,421,965.72x = 1,962,319.63 × 777,385.92
  4. Step 4: Simplify right side
    1,421,965.72x = 1,525,479,650,901.61
  5. Step 5: Solve for x
    x = 1,525,479,650,901.61/1,421,965.72
  6. Step 6: Final answer
    x = 1,072,796.36

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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.