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Finding the Fourth Proportional to 662,442.30, 993,663.45 and 330,666.30

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Solution

The fourth proportional to 662,442.30, 993,663.45 and 330,666.30 is: 495,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,442.30 : 993,663.45 = 330,666.30 : x
  2. Step 2: Convert to fraction form
    662,442.30/993,663.45 = 330,666.30/x
  3. Step 3: Cross multiply
    662,442.30x = 993,663.45 × 330,666.30
  4. Step 4: Simplify right side
    662,442.30x = 328,571,016,456.74
  5. Step 5: Solve for x
    x = 328,571,016,456.74/662,442.30
  6. Step 6: Final answer
    x = 495,999.45

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Half scale
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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.