Home / 1,386,118.78-1,912,907.55-766,011.13

Finding the Fourth Proportional to 1,386,118.78, 1,912,907.55 and 766,011.13

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Solution

The fourth proportional to 1,386,118.78, 1,912,907.55 and 766,011.13 is: 1,057,130.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,118.78 : 1,912,907.55 = 766,011.13 : x
  2. Step 2: Convert to fraction form
    1,386,118.78/1,912,907.55 = 766,011.13/x
  3. Step 3: Cross multiply
    1,386,118.78x = 1,912,907.55 × 766,011.13
  4. Step 4: Simplify right side
    1,386,118.78x = 1,465,308,473,961.03
  5. Step 5: Solve for x
    x = 1,465,308,473,961.03/1,386,118.78
  6. Step 6: Final answer
    x = 1,057,130.53

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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.