Home / 456,982.16-686,689.80-428,252.30

Finding the Fourth Proportional to 456,982.16, 686,689.80 and 428,252.30

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Solution

The fourth proportional to 456,982.16, 686,689.80 and 428,252.30 is: 643,518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,982.16 : 686,689.80 = 428,252.30 : x
  2. Step 2: Convert to fraction form
    456,982.16/686,689.80 = 428,252.30/x
  3. Step 3: Cross multiply
    456,982.16x = 686,689.80 × 428,252.30
  4. Step 4: Simplify right side
    456,982.16x = 294,076,486,236.54
  5. Step 5: Solve for x
    x = 294,076,486,236.54/456,982.16
  6. Step 6: Final answer
    x = 643,518.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.