Home / 666,874.47-1,000,312.34-312,137.60

Finding the Fourth Proportional to 666,874.47, 1,000,312.34 and 312,137.60

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Solution

The fourth proportional to 666,874.47, 1,000,312.34 and 312,137.60 is: 468,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,874.47 : 1,000,312.34 = 312,137.60 : x
  2. Step 2: Convert to fraction form
    666,874.47/1,000,312.34 = 312,137.60/x
  3. Step 3: Cross multiply
    666,874.47x = 1,000,312.34 × 312,137.60
  4. Step 4: Simplify right side
    666,874.47x = 312,235,092,122.49
  5. Step 5: Solve for x
    x = 312,235,092,122.49/666,874.47
  6. Step 6: Final answer
    x = 468,206.70

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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.