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Finding the Fourth Proportional to 691,897.50, 954,323.19 and 449,728.38

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Solution

The fourth proportional to 691,897.50, 954,323.19 and 449,728.38 is: 620,303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,897.50 : 954,323.19 = 449,728.38 : x
  2. Step 2: Convert to fraction form
    691,897.50/954,323.19 = 449,728.38/x
  3. Step 3: Cross multiply
    691,897.50x = 954,323.19 × 449,728.38
  4. Step 4: Simplify right side
    691,897.50x = 429,186,222,235.13
  5. Step 5: Solve for x
    x = 429,186,222,235.13/691,897.50
  6. Step 6: Final answer
    x = 620,303.18

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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.