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Finding the Fourth Proportional to 611,867.85, 917,801.78 and 611,867.85

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Solution

The fourth proportional to 611,867.85, 917,801.78 and 611,867.85 is: 917,801.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,867.85 : 917,801.78 = 611,867.85 : x
  2. Step 2: Convert to fraction form
    611,867.85/917,801.78 = 611,867.85/x
  3. Step 3: Cross multiply
    611,867.85x = 917,801.78 × 611,867.85
  4. Step 4: Simplify right side
    611,867.85x = 561,573,398,795.43
  5. Step 5: Solve for x
    x = 561,573,398,795.43/611,867.85
  6. Step 6: Final answer
    x = 917,801.78

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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.