Home / 1,386,358.32-1,913,106.12-774,389.54

Finding the Fourth Proportional to 1,386,358.32, 1,913,106.12 and 774,389.54

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Solution

The fourth proportional to 1,386,358.32, 1,913,106.12 and 774,389.54 is: 1,068,619.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,358.32 : 1,913,106.12 = 774,389.54 : x
  2. Step 2: Convert to fraction form
    1,386,358.32/1,913,106.12 = 774,389.54/x
  3. Step 3: Cross multiply
    1,386,358.32x = 1,913,106.12 × 774,389.54
  4. Step 4: Simplify right side
    1,386,358.32x = 1,481,489,368,237.99
  5. Step 5: Solve for x
    x = 1,481,489,368,237.99/1,386,358.32
  6. Step 6: Final answer
    x = 1,068,619.38

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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.