Home / 878,145.60-1,315,250.10-720,681.60

Finding the Fourth Proportional to 878,145.60, 1,315,250.10 and 720,681.60

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Solution

The fourth proportional to 878,145.60, 1,315,250.10 and 720,681.60 is: 1,079,407.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,145.60 : 1,315,250.10 = 720,681.60 : x
  2. Step 2: Convert to fraction form
    878,145.60/1,315,250.10 = 720,681.60/x
  3. Step 3: Cross multiply
    878,145.60x = 1,315,250.10 × 720,681.60
  4. Step 4: Simplify right side
    878,145.60x = 947,876,546,468.16
  5. Step 5: Solve for x
    x = 947,876,546,468.16/878,145.60
  6. Step 6: Final answer
    x = 1,079,407.04

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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.