Home / 1,428,860.42-1,971,852.81-784,340.54

Finding the Fourth Proportional to 1,428,860.42, 1,971,852.81 and 784,340.54

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Solution

The fourth proportional to 1,428,860.42, 1,971,852.81 and 784,340.54 is: 1,082,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,860.42 : 1,971,852.81 = 784,340.54 : x
  2. Step 2: Convert to fraction form
    1,428,860.42/1,971,852.81 = 784,340.54/x
  3. Step 3: Cross multiply
    1,428,860.42x = 1,971,852.81 × 784,340.54
  4. Step 4: Simplify right side
    1,428,860.42x = 1,546,604,097,795.92
  5. Step 5: Solve for x
    x = 1,546,604,097,795.92/1,428,860.42
  6. Step 6: Final answer
    x = 1,082,403.90

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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.