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Finding the Fourth Proportional to 561,483.78, 774,926.64 and 357,469.53

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Solution

The fourth proportional to 561,483.78, 774,926.64 and 357,469.53 is: 493,358.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,483.78 : 774,926.64 = 357,469.53 : x
  2. Step 2: Convert to fraction form
    561,483.78/774,926.64 = 357,469.53/x
  3. Step 3: Cross multiply
    561,483.78x = 774,926.64 × 357,469.53
  4. Step 4: Simplify right side
    561,483.78x = 277,012,661,785.28
  5. Step 5: Solve for x
    x = 277,012,661,785.28/561,483.78
  6. Step 6: Final answer
    x = 493,358.26

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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.