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Finding the Fourth Proportional to 567,495.45, 783,119.88 and 309,366.81

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Solution

The fourth proportional to 567,495.45, 783,119.88 and 309,366.81 is: 426,913.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,495.45 : 783,119.88 = 309,366.81 : x
  2. Step 2: Convert to fraction form
    567,495.45/783,119.88 = 309,366.81/x
  3. Step 3: Cross multiply
    567,495.45x = 783,119.88 × 309,366.81
  4. Step 4: Simplify right side
    567,495.45x = 242,271,299,123.18
  5. Step 5: Solve for x
    x = 242,271,299,123.18/567,495.45
  6. Step 6: Final answer
    x = 426,913.20

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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.