Home / 692,129.70-1,038,000.15-218,960.10

Finding the Fourth Proportional to 692,129.70, 1,038,000.15 and 218,960.10

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Solution

The fourth proportional to 692,129.70, 1,038,000.15 and 218,960.10 is: 328,378.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,129.70 : 1,038,000.15 = 218,960.10 : x
  2. Step 2: Convert to fraction form
    692,129.70/1,038,000.15 = 218,960.10/x
  3. Step 3: Cross multiply
    692,129.70x = 1,038,000.15 × 218,960.10
  4. Step 4: Simplify right side
    692,129.70x = 227,280,616,644.02
  5. Step 5: Solve for x
    x = 227,280,616,644.02/692,129.70
  6. Step 6: Final answer
    x = 328,378.65

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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.