Home / 1,387,909.08-1,916,400.06-1,065,107.88

Finding the Fourth Proportional to 1,387,909.08, 1,916,400.06 and 1,065,107.88

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Solution

The fourth proportional to 1,387,909.08, 1,916,400.06 and 1,065,107.88 is: 1,470,681.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,909.08 : 1,916,400.06 = 1,065,107.88 : x
  2. Step 2: Convert to fraction form
    1,387,909.08/1,916,400.06 = 1,065,107.88/x
  3. Step 3: Cross multiply
    1,387,909.08x = 1,916,400.06 × 1,065,107.88
  4. Step 4: Simplify right side
    1,387,909.08x = 2,041,172,805,138.47
  5. Step 5: Solve for x
    x = 2,041,172,805,138.47/1,387,909.08
  6. Step 6: Final answer
    x = 1,470,681.93

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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.