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Finding the Fourth Proportional to 539,561.52, 744,628.14 and 310,192.20

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Solution

The fourth proportional to 539,561.52, 744,628.14 and 310,192.20 is: 428,084.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,561.52 : 744,628.14 = 310,192.20 : x
  2. Step 2: Convert to fraction form
    539,561.52/744,628.14 = 310,192.20/x
  3. Step 3: Cross multiply
    539,561.52x = 744,628.14 × 310,192.20
  4. Step 4: Simplify right side
    539,561.52x = 230,977,840,928.51
  5. Step 5: Solve for x
    x = 230,977,840,928.51/539,561.52
  6. Step 6: Final answer
    x = 428,084.35

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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.