Home / 648,002.10-972,003.15-621,758.10

Finding the Fourth Proportional to 648,002.10, 972,003.15 and 621,758.10

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Solution

The fourth proportional to 648,002.10, 972,003.15 and 621,758.10 is: 932,637.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.10 : 972,003.15 = 621,758.10 : x
  2. Step 2: Convert to fraction form
    648,002.10/972,003.15 = 621,758.10/x
  3. Step 3: Cross multiply
    648,002.10x = 972,003.15 × 621,758.10
  4. Step 4: Simplify right side
    648,002.10x = 604,350,831,738.02
  5. Step 5: Solve for x
    x = 604,350,831,738.02/648,002.10
  6. Step 6: Final answer
    x = 932,637.15

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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.