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Finding the Fourth Proportional to 679,415.60, 937,645.80 and 407,493.92

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Solution

The fourth proportional to 679,415.60, 937,645.80 and 407,493.92 is: 562,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,415.60 : 937,645.80 = 407,493.92 : x
  2. Step 2: Convert to fraction form
    679,415.60/937,645.80 = 407,493.92/x
  3. Step 3: Cross multiply
    679,415.60x = 937,645.80 × 407,493.92
  4. Step 4: Simplify right side
    679,415.60x = 382,084,962,613.54
  5. Step 5: Solve for x
    x = 382,084,962,613.54/679,415.60
  6. Step 6: Final answer
    x = 562,372.96

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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.