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Finding the Fourth Proportional to 456,610.23, 630,079.22 and 309,135.11

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Solution

The fourth proportional to 456,610.23, 630,079.22 and 309,135.11 is: 426,577.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,610.23 : 630,079.22 = 309,135.11 : x
  2. Step 2: Convert to fraction form
    456,610.23/630,079.22 = 309,135.11/x
  3. Step 3: Cross multiply
    456,610.23x = 630,079.22 × 309,135.11
  4. Step 4: Simplify right side
    456,610.23x = 194,779,606,605.86
  5. Step 5: Solve for x
    x = 194,779,606,605.86/456,610.23
  6. Step 6: Final answer
    x = 426,577.40

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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.