Home / 1,421,979.48-1,962,338.60-777,399.72

Finding the Fourth Proportional to 1,421,979.48, 1,962,338.60 and 777,399.72

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Solution

The fourth proportional to 1,421,979.48, 1,962,338.60 and 777,399.72 is: 1,072,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,979.48 : 1,962,338.60 = 777,399.72 : x
  2. Step 2: Convert to fraction form
    1,421,979.48/1,962,338.60 = 777,399.72/x
  3. Step 3: Cross multiply
    1,421,979.48x = 1,962,338.60 × 777,399.72
  4. Step 4: Simplify right side
    1,421,979.48x = 1,525,521,478,185.19
  5. Step 5: Solve for x
    x = 1,525,521,478,185.19/1,421,979.48
  6. Step 6: Final answer
    x = 1,072,815.40

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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.