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Finding the Fourth Proportional to 646,562.64, 892,221 and 360,031.62

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Solution

The fourth proportional to 646,562.64, 892,221 and 360,031.62 is: 496,823.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,562.64 : 892,221 = 360,031.62 : x
  2. Step 2: Convert to fraction form
    646,562.64/892,221 = 360,031.62/x
  3. Step 3: Cross multiply
    646,562.64x = 892,221 × 360,031.62
  4. Step 4: Simplify right side
    646,562.64x = 321,227,772,028.02
  5. Step 5: Solve for x
    x = 321,227,772,028.02/646,562.64
  6. Step 6: Final answer
    x = 496,823.90

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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.