Home / 648,006.20-972,009.30-608,640.20

Finding the Fourth Proportional to 648,006.20, 972,009.30 and 608,640.20

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Solution

The fourth proportional to 648,006.20, 972,009.30 and 608,640.20 is: 912,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,006.20 : 972,009.30 = 608,640.20 : x
  2. Step 2: Convert to fraction form
    648,006.20/972,009.30 = 608,640.20/x
  3. Step 3: Cross multiply
    648,006.20x = 972,009.30 × 608,640.20
  4. Step 4: Simplify right side
    648,006.20x = 591,603,934,753.86
  5. Step 5: Solve for x
    x = 591,603,934,753.86/648,006.20
  6. Step 6: Final answer
    x = 912,960.30

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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.