Home / 567,623.91-783,327.12-309,498.78

Finding the Fourth Proportional to 567,623.91, 783,327.12 and 309,498.78

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Solution

The fourth proportional to 567,623.91, 783,327.12 and 309,498.78 is: 427,111.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,623.91 : 783,327.12 = 309,498.78 : x
  2. Step 2: Convert to fraction form
    567,623.91/783,327.12 = 309,498.78/x
  3. Step 3: Cross multiply
    567,623.91x = 783,327.12 × 309,498.78
  4. Step 4: Simplify right side
    567,623.91x = 242,438,787,980.91
  5. Step 5: Solve for x
    x = 242,438,787,980.91/567,623.91
  6. Step 6: Final answer
    x = 427,111.66

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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.