Home / 1,388,437.40-1,916,018.25-784,825.40

Finding the Fourth Proportional to 1,388,437.40, 1,916,018.25 and 784,825.40

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Solution

The fourth proportional to 1,388,437.40, 1,916,018.25 and 784,825.40 is: 1,083,044.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,437.40 : 1,916,018.25 = 784,825.40 : x
  2. Step 2: Convert to fraction form
    1,388,437.40/1,916,018.25 = 784,825.40/x
  3. Step 3: Cross multiply
    1,388,437.40x = 1,916,018.25 × 784,825.40
  4. Step 4: Simplify right side
    1,388,437.40x = 1,503,739,791,310.50
  5. Step 5: Solve for x
    x = 1,503,739,791,310.50/1,388,437.40
  6. Step 6: Final answer
    x = 1,083,044.72

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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.