Home / 1,387,855.80-1,915,152.39-776,059.02

Finding the Fourth Proportional to 1,387,855.80, 1,915,152.39 and 776,059.02

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Solution

The fourth proportional to 1,387,855.80, 1,915,152.39 and 776,059.02 is: 1,070,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,855.80 : 1,915,152.39 = 776,059.02 : x
  2. Step 2: Convert to fraction form
    1,387,855.80/1,915,152.39 = 776,059.02/x
  3. Step 3: Cross multiply
    1,387,855.80x = 1,915,152.39 × 776,059.02
  4. Step 4: Simplify right side
    1,387,855.80x = 1,486,271,286,934.06
  5. Step 5: Solve for x
    x = 1,486,271,286,934.06/1,387,855.80
  6. Step 6: Final answer
    x = 1,070,911.90

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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.