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Finding the Fourth Proportional to 456,778.71, 630,334.76 and 252,817.47

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Solution

The fourth proportional to 456,778.71, 630,334.76 and 252,817.47 is: 348,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,778.71 : 630,334.76 = 252,817.47 : x
  2. Step 2: Convert to fraction form
    456,778.71/630,334.76 = 252,817.47/x
  3. Step 3: Cross multiply
    456,778.71x = 630,334.76 × 252,817.47
  4. Step 4: Simplify right side
    456,778.71x = 159,359,638,012.17
  5. Step 5: Solve for x
    x = 159,359,638,012.17/456,778.71
  6. Step 6: Final answer
    x = 348,877.11

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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.