Home / 1,421,178.95-1,961,231.87-776,599.18

Finding the Fourth Proportional to 1,421,178.95, 1,961,231.87 and 776,599.18

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Solution

The fourth proportional to 1,421,178.95, 1,961,231.87 and 776,599.18 is: 1,071,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,178.95 : 1,961,231.87 = 776,599.18 : x
  2. Step 2: Convert to fraction form
    1,421,178.95/1,961,231.87 = 776,599.18/x
  3. Step 3: Cross multiply
    1,421,178.95x = 1,961,231.87 × 776,599.18
  4. Step 4: Simplify right side
    1,421,178.95x = 1,523,091,062,031.87
  5. Step 5: Solve for x
    x = 1,523,091,062,031.87/1,421,178.95
  6. Step 6: Final answer
    x = 1,071,709.56

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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.