Home / 879,009.20-1,315,014.60-761,980.40

Finding the Fourth Proportional to 879,009.20, 1,315,014.60 and 761,980.40

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Solution

The fourth proportional to 879,009.20, 1,315,014.60 and 761,980.40 is: 1,139,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,009.20 : 1,315,014.60 = 761,980.40 : x
  2. Step 2: Convert to fraction form
    879,009.20/1,315,014.60 = 761,980.40/x
  3. Step 3: Cross multiply
    879,009.20x = 1,315,014.60 × 761,980.40
  4. Step 4: Simplify right side
    879,009.20x = 1,002,015,350,913.84
  5. Step 5: Solve for x
    x = 1,002,015,350,913.84/879,009.20
  6. Step 6: Final answer
    x = 1,139,937.27

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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.