Home / 1,557,988.80-2,150,018.74-869,654.64

Finding the Fourth Proportional to 1,557,988.80, 2,150,018.74 and 869,654.64

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Solution

The fourth proportional to 1,557,988.80, 2,150,018.74 and 869,654.64 is: 1,200,120.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,988.80 : 2,150,018.74 = 869,654.64 : x
  2. Step 2: Convert to fraction form
    1,557,988.80/2,150,018.74 = 869,654.64/x
  3. Step 3: Cross multiply
    1,557,988.80x = 2,150,018.74 × 869,654.64
  4. Step 4: Simplify right side
    1,557,988.80x = 1,869,773,776,528.86
  5. Step 5: Solve for x
    x = 1,869,773,776,528.86/1,557,988.80
  6. Step 6: Final answer
    x = 1,200,120.17

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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.