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Finding the Fourth Proportional to 508,720.80, 763,426.80 and 284,080.80

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Solution

The fourth proportional to 508,720.80, 763,426.80 and 284,080.80 is: 426,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,720.80 : 763,426.80 = 284,080.80 : x
  2. Step 2: Convert to fraction form
    508,720.80/763,426.80 = 284,080.80/x
  3. Step 3: Cross multiply
    508,720.80x = 763,426.80 × 284,080.80
  4. Step 4: Simplify right side
    508,720.80x = 216,874,896,085.44
  5. Step 5: Solve for x
    x = 216,874,896,085.44/508,720.80
  6. Step 6: Final answer
    x = 426,314.19

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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.