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Finding the Fourth Proportional to 567,487.40, 783,141.29 and 309,364.49

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Solution

The fourth proportional to 567,487.40, 783,141.29 and 309,364.49 is: 426,927.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,487.40 : 783,141.29 = 309,364.49 : x
  2. Step 2: Convert to fraction form
    567,487.40/783,141.29 = 309,364.49/x
  3. Step 3: Cross multiply
    567,487.40x = 783,141.29 × 309,364.49
  4. Step 4: Simplify right side
    567,487.40x = 242,276,106,189.82
  5. Step 5: Solve for x
    x = 242,276,106,189.82/567,487.40
  6. Step 6: Final answer
    x = 426,927.73

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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.