Home / 648,619,135.56-974,480,839.71-415,905,785.61

Finding the Fourth Proportional to 648,619,135.56, 974,480,839.71 and 415,905,785.61

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Solution

The fourth proportional to 648,619,135.56, 974,480,839.71 and 415,905,785.61 is: 624,853,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,619,135.56 : 974,480,839.71 = 415,905,785.61 : x
  2. Step 2: Convert to fraction form
    648,619,135.56/974,480,839.71 = 415,905,785.61/x
  3. Step 3: Cross multiply
    648,619,135.56x = 974,480,839.71 × 415,905,785.61
  4. Step 4: Simplify right side
    648,619,135.56x = 405,292,219,205,903,744
  5. Step 5: Solve for x
    x = 405,292,219,205,903,744/648,619,135.56
  6. Step 6: Final answer
    x = 624,853,935.05

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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.