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Finding the Fourth Proportional to 755,718.80, 1,130,953.80 and 519,522.80

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Solution

The fourth proportional to 755,718.80, 1,130,953.80 and 519,522.80 is: 777,480.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,718.80 : 1,130,953.80 = 519,522.80 : x
  2. Step 2: Convert to fraction form
    755,718.80/1,130,953.80 = 519,522.80/x
  3. Step 3: Cross multiply
    755,718.80x = 1,130,953.80 × 519,522.80
  4. Step 4: Simplify right side
    755,718.80x = 587,556,284,846.64
  5. Step 5: Solve for x
    x = 587,556,284,846.64/755,718.80
  6. Step 6: Final answer
    x = 777,480.04

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1.5x scale

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.