Home / 879,207.40-1,318,811.10-505,959.40

Finding the Fourth Proportional to 879,207.40, 1,318,811.10 and 505,959.40

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Solution

The fourth proportional to 879,207.40, 1,318,811.10 and 505,959.40 is: 758,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,207.40 : 1,318,811.10 = 505,959.40 : x
  2. Step 2: Convert to fraction form
    879,207.40/1,318,811.10 = 505,959.40/x
  3. Step 3: Cross multiply
    879,207.40x = 1,318,811.10 × 505,959.40
  4. Step 4: Simplify right side
    879,207.40x = 667,264,872,869.34
  5. Step 5: Solve for x
    x = 667,264,872,869.34/879,207.40
  6. Step 6: Final answer
    x = 758,939.10

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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.