Home / 1,427,406.42-1,969,638.66-815,598.81

Finding the Fourth Proportional to 1,427,406.42, 1,969,638.66 and 815,598.81

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Solution

The fourth proportional to 1,427,406.42, 1,969,638.66 and 815,598.81 is: 1,125,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,406.42 : 1,969,638.66 = 815,598.81 : x
  2. Step 2: Convert to fraction form
    1,427,406.42/1,969,638.66 = 815,598.81/x
  3. Step 3: Cross multiply
    1,427,406.42x = 1,969,638.66 × 815,598.81
  4. Step 4: Simplify right side
    1,427,406.42x = 1,606,434,947,225.99
  5. Step 5: Solve for x
    x = 1,606,434,947,225.99/1,427,406.42
  6. Step 6: Final answer
    x = 1,125,422.25

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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.