Home / 819,271.62-1,130,131.76-512,816.04

Finding the Fourth Proportional to 819,271.62, 1,130,131.76 and 512,816.04

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Solution

The fourth proportional to 819,271.62, 1,130,131.76 and 512,816.04 is: 707,396.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,271.62 : 1,130,131.76 = 512,816.04 : x
  2. Step 2: Convert to fraction form
    819,271.62/1,130,131.76 = 512,816.04/x
  3. Step 3: Cross multiply
    819,271.62x = 1,130,131.76 × 512,816.04
  4. Step 4: Simplify right side
    819,271.62x = 579,549,693,841.43
  5. Step 5: Solve for x
    x = 579,549,693,841.43/819,271.62
  6. Step 6: Final answer
    x = 707,396.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.