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Finding the Fourth Proportional to 875,104.60, 1,310,688.60 and 520,810.60

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Solution

The fourth proportional to 875,104.60, 1,310,688.60 and 520,810.60 is: 780,044.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,104.60 : 1,310,688.60 = 520,810.60 : x
  2. Step 2: Convert to fraction form
    875,104.60/1,310,688.60 = 520,810.60/x
  3. Step 3: Cross multiply
    875,104.60x = 1,310,688.60 × 520,810.60
  4. Step 4: Simplify right side
    875,104.60x = 682,620,516,179.16
  5. Step 5: Solve for x
    x = 682,620,516,179.16/875,104.60
  6. Step 6: Final answer
    x = 780,044.48

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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.