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Finding the Fourth Proportional to 887,662.90, 1,331,465.19 and 355,040.98

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Solution

The fourth proportional to 887,662.90, 1,331,465.19 and 355,040.98 is: 532,549.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,662.90 : 1,331,465.19 = 355,040.98 : x
  2. Step 2: Convert to fraction form
    887,662.90/1,331,465.19 = 355,040.98/x
  3. Step 3: Cross multiply
    887,662.90x = 1,331,465.19 × 355,040.98
  4. Step 4: Simplify right side
    887,662.90x = 472,724,705,893.49
  5. Step 5: Solve for x
    x = 472,724,705,893.49/887,662.90
  6. Step 6: Final answer
    x = 532,549.81

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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.