Home / 648,004.20-972,006.30-608,638.20

Finding the Fourth Proportional to 648,004.20, 972,006.30 and 608,638.20

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Solution

The fourth proportional to 648,004.20, 972,006.30 and 608,638.20 is: 912,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,004.20 : 972,006.30 = 608,638.20 : x
  2. Step 2: Convert to fraction form
    648,004.20/972,006.30 = 608,638.20/x
  3. Step 3: Cross multiply
    648,004.20x = 972,006.30 × 608,638.20
  4. Step 4: Simplify right side
    648,004.20x = 591,600,164,820.66
  5. Step 5: Solve for x
    x = 591,600,164,820.66/648,004.20
  6. Step 6: Final answer
    x = 912,957.30

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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.