Home / 876,614.40-1,312,297.20-521,445.60

Finding the Fourth Proportional to 876,614.40, 1,312,297.20 and 521,445.60

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Solution

The fourth proportional to 876,614.40, 1,312,297.20 and 521,445.60 is: 780,607.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,614.40 : 1,312,297.20 = 521,445.60 : x
  2. Step 2: Convert to fraction form
    876,614.40/1,312,297.20 = 521,445.60/x
  3. Step 3: Cross multiply
    876,614.40x = 1,312,297.20 × 521,445.60
  4. Step 4: Simplify right side
    876,614.40x = 684,291,600,832.32
  5. Step 5: Solve for x
    x = 684,291,600,832.32/876,614.40
  6. Step 6: Final answer
    x = 780,607.30

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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.