Home / 1,421,006.45-1,960,965.77-776,412.81

Finding the Fourth Proportional to 1,421,006.45, 1,960,965.77 and 776,412.81

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Solution

The fourth proportional to 1,421,006.45, 1,960,965.77 and 776,412.81 is: 1,071,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,006.45 : 1,960,965.77 = 776,412.81 : x
  2. Step 2: Convert to fraction form
    1,421,006.45/1,960,965.77 = 776,412.81/x
  3. Step 3: Cross multiply
    1,421,006.45x = 1,960,965.77 × 776,412.81
  4. Step 4: Simplify right side
    1,421,006.45x = 1,522,518,939,917.45
  5. Step 5: Solve for x
    x = 1,522,518,939,917.45/1,421,006.45
  6. Step 6: Final answer
    x = 1,071,437.04

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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.