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Finding the Fourth Proportional to 648,002.55, 972,003.83 and 603,715.80

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Solution

The fourth proportional to 648,002.55, 972,003.83 and 603,715.80 is: 905,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.55 : 972,003.83 = 603,715.80 : x
  2. Step 2: Convert to fraction form
    648,002.55/972,003.83 = 603,715.80/x
  3. Step 3: Cross multiply
    648,002.55x = 972,003.83 × 603,715.80
  4. Step 4: Simplify right side
    648,002.55x = 586,814,069,831.51
  5. Step 5: Solve for x
    x = 586,814,069,831.51/648,002.55
  6. Step 6: Final answer
    x = 905,573.70

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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.