Home / 876,870.40-1,315,305.60-687,913.60

Finding the Fourth Proportional to 876,870.40, 1,315,305.60 and 687,913.60

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Solution

The fourth proportional to 876,870.40, 1,315,305.60 and 687,913.60 is: 1,031,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,870.40 : 1,315,305.60 = 687,913.60 : x
  2. Step 2: Convert to fraction form
    876,870.40/1,315,305.60 = 687,913.60/x
  3. Step 3: Cross multiply
    876,870.40x = 1,315,305.60 × 687,913.60
  4. Step 4: Simplify right side
    876,870.40x = 904,816,610,396.16
  5. Step 5: Solve for x
    x = 904,816,610,396.16/876,870.40
  6. Step 6: Final answer
    x = 1,031,870.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.