Home / 1,422,055.92-1,962,416.28-777,478.64

Finding the Fourth Proportional to 1,422,055.92, 1,962,416.28 and 777,478.64

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Solution

The fourth proportional to 1,422,055.92, 1,962,416.28 and 777,478.64 is: 1,072,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,055.92 : 1,962,416.28 = 777,478.64 : x
  2. Step 2: Convert to fraction form
    1,422,055.92/1,962,416.28 = 777,478.64/x
  3. Step 3: Cross multiply
    1,422,055.92x = 1,962,416.28 × 777,478.64
  4. Step 4: Simplify right side
    1,422,055.92x = 1,525,736,740,488.26
  5. Step 5: Solve for x
    x = 1,525,736,740,488.26/1,422,055.92
  6. Step 6: Final answer
    x = 1,072,909.10

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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.