Home / 688,272.70-949,650.15-401,629.18

Finding the Fourth Proportional to 688,272.70, 949,650.15 and 401,629.18

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Solution

The fourth proportional to 688,272.70, 949,650.15 and 401,629.18 is: 554,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,272.70 : 949,650.15 = 401,629.18 : x
  2. Step 2: Convert to fraction form
    688,272.70/949,650.15 = 401,629.18/x
  3. Step 3: Cross multiply
    688,272.70x = 949,650.15 × 401,629.18
  4. Step 4: Simplify right side
    688,272.70x = 381,407,211,031.38
  5. Step 5: Solve for x
    x = 381,407,211,031.38/688,272.70
  6. Step 6: Final answer
    x = 554,151.30

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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.