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Finding the Fourth Proportional to 676,747.92, 933,850.04 and 390,212.64

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Solution

The fourth proportional to 676,747.92, 933,850.04 and 390,212.64 is: 538,457.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,747.92 : 933,850.04 = 390,212.64 : x
  2. Step 2: Convert to fraction form
    676,747.92/933,850.04 = 390,212.64/x
  3. Step 3: Cross multiply
    676,747.92x = 933,850.04 × 390,212.64
  4. Step 4: Simplify right side
    676,747.92x = 364,400,089,472.51
  5. Step 5: Solve for x
    x = 364,400,089,472.51/676,747.92
  6. Step 6: Final answer
    x = 538,457.64

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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.