Home / 500,547.20-690,589.76-306,883.20

Finding the Fourth Proportional to 500,547.20, 690,589.76 and 306,883.20

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Solution

The fourth proportional to 500,547.20, 690,589.76 and 306,883.20 is: 423,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,547.20 : 690,589.76 = 306,883.20 : x
  2. Step 2: Convert to fraction form
    500,547.20/690,589.76 = 306,883.20/x
  3. Step 3: Cross multiply
    500,547.20x = 690,589.76 × 306,883.20
  4. Step 4: Simplify right side
    500,547.20x = 211,930,395,436.03
  5. Step 5: Solve for x
    x = 211,930,395,436.03/500,547.20
  6. Step 6: Final answer
    x = 423,397.42

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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.