Home / 1,428,678.05-1,971,696.72-784,207.41

Finding the Fourth Proportional to 1,428,678.05, 1,971,696.72 and 784,207.41

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Solution

The fourth proportional to 1,428,678.05, 1,971,696.72 and 784,207.41 is: 1,082,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,678.05 : 1,971,696.72 = 784,207.41 : x
  2. Step 2: Convert to fraction form
    1,428,678.05/1,971,696.72 = 784,207.41/x
  3. Step 3: Cross multiply
    1,428,678.05x = 1,971,696.72 × 784,207.41
  4. Step 4: Simplify right side
    1,428,678.05x = 1,546,219,178,096.70
  5. Step 5: Solve for x
    x = 1,546,219,178,096.70/1,428,678.05
  6. Step 6: Final answer
    x = 1,082,272.65

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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.