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Finding the Fourth Proportional to 613,686.24, 919,734.48 and 495,404.64

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Solution

The fourth proportional to 613,686.24, 919,734.48 and 495,404.64 is: 742,465.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,686.24 : 919,734.48 = 495,404.64 : x
  2. Step 2: Convert to fraction form
    613,686.24/919,734.48 = 495,404.64/x
  3. Step 3: Cross multiply
    613,686.24x = 919,734.48 × 495,404.64
  4. Step 4: Simplify right side
    613,686.24x = 455,640,728,959.99
  5. Step 5: Solve for x
    x = 455,640,728,959.99/613,686.24
  6. Step 6: Final answer
    x = 742,465.28

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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.