Home / 879,004.20-1,315,007.10-761,975.40

Finding the Fourth Proportional to 879,004.20, 1,315,007.10 and 761,975.40

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Solution

The fourth proportional to 879,004.20, 1,315,007.10 and 761,975.40 is: 1,139,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,004.20 : 1,315,007.10 = 761,975.40 : x
  2. Step 2: Convert to fraction form
    879,004.20/1,315,007.10 = 761,975.40/x
  3. Step 3: Cross multiply
    879,004.20x = 1,315,007.10 × 761,975.40
  4. Step 4: Simplify right side
    879,004.20x = 1,002,003,061,025.34
  5. Step 5: Solve for x
    x = 1,002,003,061,025.34/879,004.20
  6. Step 6: Final answer
    x = 1,139,929.78

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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.