Home / 1,987,870.68-2,739,985.38-1,406,342.52

Finding the Fourth Proportional to 1,987,870.68, 2,739,985.38 and 1,406,342.52

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Solution

The fourth proportional to 1,987,870.68, 2,739,985.38 and 1,406,342.52 is: 1,938,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,870.68 : 2,739,985.38 = 1,406,342.52 : x
  2. Step 2: Convert to fraction form
    1,987,870.68/2,739,985.38 = 1,406,342.52/x
  3. Step 3: Cross multiply
    1,987,870.68x = 2,739,985.38 × 1,406,342.52
  4. Step 4: Simplify right side
    1,987,870.68x = 3,853,357,944,072.36
  5. Step 5: Solve for x
    x = 3,853,357,944,072.36/1,987,870.68
  6. Step 6: Final answer
    x = 1,938,434.92

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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.