Home / 1,421,821.92-1,962,109.80-777,242.40

Finding the Fourth Proportional to 1,421,821.92, 1,962,109.80 and 777,242.40

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Solution

The fourth proportional to 1,421,821.92, 1,962,109.80 and 777,242.40 is: 1,072,592.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,821.92 : 1,962,109.80 = 777,242.40 : x
  2. Step 2: Convert to fraction form
    1,421,821.92/1,962,109.80 = 777,242.40/x
  3. Step 3: Cross multiply
    1,421,821.92x = 1,962,109.80 × 777,242.40
  4. Step 4: Simplify right side
    1,421,821.92x = 1,525,034,930,015.52
  5. Step 5: Solve for x
    x = 1,525,034,930,015.52/1,421,821.92
  6. Step 6: Final answer
    x = 1,072,592.08

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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.