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Finding the Fourth Proportional to 561,633.93, 775,055.21 and 306,985.10

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Solution

The fourth proportional to 561,633.93, 775,055.21 and 306,985.10 is: 423,639.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,633.93 : 775,055.21 = 306,985.10 : x
  2. Step 2: Convert to fraction form
    561,633.93/775,055.21 = 306,985.10/x
  3. Step 3: Cross multiply
    561,633.93x = 775,055.21 × 306,985.10
  4. Step 4: Simplify right side
    561,633.93x = 237,930,395,737.17
  5. Step 5: Solve for x
    x = 237,930,395,737.17/561,633.93
  6. Step 6: Final answer
    x = 423,639.64

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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.