Home / 497,101.20-686,047.36-306,226.32

Finding the Fourth Proportional to 497,101.20, 686,047.36 and 306,226.32

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Solution

The fourth proportional to 497,101.20, 686,047.36 and 306,226.32 is: 422,621.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,101.20 : 686,047.36 = 306,226.32 : x
  2. Step 2: Convert to fraction form
    497,101.20/686,047.36 = 306,226.32/x
  3. Step 3: Cross multiply
    497,101.20x = 686,047.36 × 306,226.32
  4. Step 4: Simplify right side
    497,101.20x = 210,085,758,398.52
  5. Step 5: Solve for x
    x = 210,085,758,398.52/497,101.20
  6. Step 6: Final answer
    x = 422,621.71

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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.