Home / 1,420,703.84-1,960,600.20-776,165.78

Finding the Fourth Proportional to 1,420,703.84, 1,960,600.20 and 776,165.78

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Solution

The fourth proportional to 1,420,703.84, 1,960,600.20 and 776,165.78 is: 1,071,124.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,703.84 : 1,960,600.20 = 776,165.78 : x
  2. Step 2: Convert to fraction form
    1,420,703.84/1,960,600.20 = 776,165.78/x
  3. Step 3: Cross multiply
    1,420,703.84x = 1,960,600.20 × 776,165.78
  4. Step 4: Simplify right side
    1,420,703.84x = 1,521,750,783,501.16
  5. Step 5: Solve for x
    x = 1,521,750,783,501.16/1,420,703.84
  6. Step 6: Final answer
    x = 1,071,124.57

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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.