Home / 1,386,868.28-1,913,880.83-775,021.05

Finding the Fourth Proportional to 1,386,868.28, 1,913,880.83 and 775,021.05

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Solution

The fourth proportional to 1,386,868.28, 1,913,880.83 and 775,021.05 is: 1,069,530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,868.28 : 1,913,880.83 = 775,021.05 : x
  2. Step 2: Convert to fraction form
    1,386,868.28/1,913,880.83 = 775,021.05/x
  3. Step 3: Cross multiply
    1,386,868.28x = 1,913,880.83 × 775,021.05
  4. Step 4: Simplify right side
    1,386,868.28x = 1,483,297,918,934.51
  5. Step 5: Solve for x
    x = 1,483,297,918,934.51/1,386,868.28
  6. Step 6: Final answer
    x = 1,069,530.50

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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.