Home / 1,421,007.95-1,960,967.84-776,414.31

Finding the Fourth Proportional to 1,421,007.95, 1,960,967.84 and 776,414.31

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Solution

The fourth proportional to 1,421,007.95, 1,960,967.84 and 776,414.31 is: 1,071,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,007.95 : 1,960,967.84 = 776,414.31 : x
  2. Step 2: Convert to fraction form
    1,421,007.95/1,960,967.84 = 776,414.31/x
  3. Step 3: Cross multiply
    1,421,007.95x = 1,960,967.84 × 776,414.31
  4. Step 4: Simplify right side
    1,421,007.95x = 1,522,523,488,543.72
  5. Step 5: Solve for x
    x = 1,522,523,488,543.72/1,421,007.95
  6. Step 6: Final answer
    x = 1,071,439.11

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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.