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Finding the Fourth Proportional to 911,801.88, 1,258,220.70 and 503,898.84

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Solution

The fourth proportional to 911,801.88, 1,258,220.70 and 503,898.84 is: 695,343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,801.88 : 1,258,220.70 = 503,898.84 : x
  2. Step 2: Convert to fraction form
    911,801.88/1,258,220.70 = 503,898.84/x
  3. Step 3: Cross multiply
    911,801.88x = 1,258,220.70 × 503,898.84
  4. Step 4: Simplify right side
    911,801.88x = 634,015,951,193.99
  5. Step 5: Solve for x
    x = 634,015,951,193.99/911,801.88
  6. Step 6: Final answer
    x = 695,343.98

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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.