Home / 1,230,884.21-1,698,705.80-687,126.15

Finding the Fourth Proportional to 1,230,884.21, 1,698,705.80 and 687,126.15

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Solution

The fourth proportional to 1,230,884.21, 1,698,705.80 and 687,126.15 is: 948,281.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,884.21 : 1,698,705.80 = 687,126.15 : x
  2. Step 2: Convert to fraction form
    1,230,884.21/1,698,705.80 = 687,126.15/x
  3. Step 3: Cross multiply
    1,230,884.21x = 1,698,705.80 × 687,126.15
  4. Step 4: Simplify right side
    1,230,884.21x = 1,167,225,172,901.04
  5. Step 5: Solve for x
    x = 1,167,225,172,901.04/1,230,884.21
  6. Step 6: Final answer
    x = 948,281.87

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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.