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Finding the Fourth Proportional to 567,985.41, 783,818.80 and 309,862.38

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Solution

The fourth proportional to 567,985.41, 783,818.80 and 309,862.38 is: 427,609.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,985.41 : 783,818.80 = 309,862.38 : x
  2. Step 2: Convert to fraction form
    567,985.41/783,818.80 = 309,862.38/x
  3. Step 3: Cross multiply
    567,985.41x = 783,818.80 × 309,862.38
  4. Step 4: Simplify right side
    567,985.41x = 242,875,958,856.74
  5. Step 5: Solve for x
    x = 242,875,958,856.74/567,985.41
  6. Step 6: Final answer
    x = 427,609.50

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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.