Home / 875,168.40-1,310,128.20-519,999.60

Finding the Fourth Proportional to 875,168.40, 1,310,128.20 and 519,999.60

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Solution

The fourth proportional to 875,168.40, 1,310,128.20 and 519,999.60 is: 778,440.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,168.40 : 1,310,128.20 = 519,999.60 : x
  2. Step 2: Convert to fraction form
    875,168.40/1,310,128.20 = 519,999.60/x
  3. Step 3: Cross multiply
    875,168.40x = 1,310,128.20 × 519,999.60
  4. Step 4: Simplify right side
    875,168.40x = 681,266,139,948.72
  5. Step 5: Solve for x
    x = 681,266,139,948.72/875,168.40
  6. Step 6: Final answer
    x = 778,440.06

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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.