Home / 643,024.32-887,292.01-352,559.45

Finding the Fourth Proportional to 643,024.32, 887,292.01 and 352,559.45

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Solution

The fourth proportional to 643,024.32, 887,292.01 and 352,559.45 is: 486,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,024.32 : 887,292.01 = 352,559.45 : x
  2. Step 2: Convert to fraction form
    643,024.32/887,292.01 = 352,559.45/x
  3. Step 3: Cross multiply
    643,024.32x = 887,292.01 × 352,559.45
  4. Step 4: Simplify right side
    643,024.32x = 312,823,181,272.20
  5. Step 5: Solve for x
    x = 312,823,181,272.20/643,024.32
  6. Step 6: Final answer
    x = 486,487.32

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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.