Home / 1,388,444.63-1,916,231.02-776,631.38

Finding the Fourth Proportional to 1,388,444.63, 1,916,231.02 and 776,631.38

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Solution

The fourth proportional to 1,388,444.63, 1,916,231.02 and 776,631.38 is: 1,071,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,444.63 : 1,916,231.02 = 776,631.38 : x
  2. Step 2: Convert to fraction form
    1,388,444.63/1,916,231.02 = 776,631.38/x
  3. Step 3: Cross multiply
    1,388,444.63x = 1,916,231.02 × 776,631.38
  4. Step 4: Simplify right side
    1,388,444.63x = 1,488,205,129,938.67
  5. Step 5: Solve for x
    x = 1,488,205,129,938.67/1,388,444.63
  6. Step 6: Final answer
    x = 1,071,850.55

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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.