Home / 497,438.04-686,269.61-306,119.28

Finding the Fourth Proportional to 497,438.04, 686,269.61 and 306,119.28

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Solution

The fourth proportional to 497,438.04, 686,269.61 and 306,119.28 is: 422,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,438.04 : 686,269.61 = 306,119.28 : x
  2. Step 2: Convert to fraction form
    497,438.04/686,269.61 = 306,119.28/x
  3. Step 3: Cross multiply
    497,438.04x = 686,269.61 × 306,119.28
  4. Step 4: Simplify right side
    497,438.04x = 210,080,357,021.46
  5. Step 5: Solve for x
    x = 210,080,357,021.46/497,438.04
  6. Step 6: Final answer
    x = 422,324.68

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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.