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Finding the Fourth Proportional to 548,393.28, 756,610.56 and 306,643.20

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Solution

The fourth proportional to 548,393.28, 756,610.56 and 306,643.20 is: 423,071.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,393.28 : 756,610.56 = 306,643.20 : x
  2. Step 2: Convert to fraction form
    548,393.28/756,610.56 = 306,643.20/x
  3. Step 3: Cross multiply
    548,393.28x = 756,610.56 × 306,643.20
  4. Step 4: Simplify right side
    548,393.28x = 232,009,483,272.19
  5. Step 5: Solve for x
    x = 232,009,483,272.19/548,393.28
  6. Step 6: Final answer
    x = 423,071.35

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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.