Home / 879,322.60-1,318,983.90-643,126.60

Finding the Fourth Proportional to 879,322.60, 1,318,983.90 and 643,126.60

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Solution

The fourth proportional to 879,322.60, 1,318,983.90 and 643,126.60 is: 964,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,322.60 : 1,318,983.90 = 643,126.60 : x
  2. Step 2: Convert to fraction form
    879,322.60/1,318,983.90 = 643,126.60/x
  3. Step 3: Cross multiply
    879,322.60x = 1,318,983.90 × 643,126.60
  4. Step 4: Simplify right side
    879,322.60x = 848,273,631,061.74
  5. Step 5: Solve for x
    x = 848,273,631,061.74/879,322.60
  6. Step 6: Final answer
    x = 964,689.90

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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.