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Finding the Fourth Proportional to 661,659.36, 912,622.32 and 457,772.64

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Solution

The fourth proportional to 661,659.36, 912,622.32 and 457,772.64 is: 631,402.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,659.36 : 912,622.32 = 457,772.64 : x
  2. Step 2: Convert to fraction form
    661,659.36/912,622.32 = 457,772.64/x
  3. Step 3: Cross multiply
    661,659.36x = 912,622.32 × 457,772.64
  4. Step 4: Simplify right side
    661,659.36x = 417,773,528,749.33
  5. Step 5: Solve for x
    x = 417,773,528,749.33/661,659.36
  6. Step 6: Final answer
    x = 631,402.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.