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Finding the Fourth Proportional to 559,940.30, 839,910.45 and 307,123.10

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Solution

The fourth proportional to 559,940.30, 839,910.45 and 307,123.10 is: 460,684.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,940.30 : 839,910.45 = 307,123.10 : x
  2. Step 2: Convert to fraction form
    559,940.30/839,910.45 = 307,123.10/x
  3. Step 3: Cross multiply
    559,940.30x = 839,910.45 × 307,123.10
  4. Step 4: Simplify right side
    559,940.30x = 257,955,901,126.40
  5. Step 5: Solve for x
    x = 257,955,901,126.40/559,940.30
  6. Step 6: Final answer
    x = 460,684.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.