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Finding the Fourth Proportional to 504,080.40, 695,643.48 and 310,414.80

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Solution

The fourth proportional to 504,080.40, 695,643.48 and 310,414.80 is: 428,380.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,080.40 : 695,643.48 = 310,414.80 : x
  2. Step 2: Convert to fraction form
    504,080.40/695,643.48 = 310,414.80/x
  3. Step 3: Cross multiply
    504,080.40x = 695,643.48 × 310,414.80
  4. Step 4: Simplify right side
    504,080.40x = 215,938,031,715.50
  5. Step 5: Solve for x
    x = 215,938,031,715.50/504,080.40
  6. Step 6: Final answer
    x = 428,380.14

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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.