Home / 812,000.60-1,218,000.90-251,091.80

Finding the Fourth Proportional to 812,000.60, 1,218,000.90 and 251,091.80

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Solution

The fourth proportional to 812,000.60, 1,218,000.90 and 251,091.80 is: 376,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,000.60 : 1,218,000.90 = 251,091.80 : x
  2. Step 2: Convert to fraction form
    812,000.60/1,218,000.90 = 251,091.80/x
  3. Step 3: Cross multiply
    812,000.60x = 1,218,000.90 × 251,091.80
  4. Step 4: Simplify right side
    812,000.60x = 305,830,038,382.62
  5. Step 5: Solve for x
    x = 305,830,038,382.62/812,000.60
  6. Step 6: Final answer
    x = 376,637.70

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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.