Home / 890,187.98-1,227,239.30-563,338.40

Finding the Fourth Proportional to 890,187.98, 1,227,239.30 and 563,338.40

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Solution

The fourth proportional to 890,187.98, 1,227,239.30 and 563,338.40 is: 776,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,187.98 : 1,227,239.30 = 563,338.40 : x
  2. Step 2: Convert to fraction form
    890,187.98/1,227,239.30 = 563,338.40/x
  3. Step 3: Cross multiply
    890,187.98x = 1,227,239.30 × 563,338.40
  4. Step 4: Simplify right side
    890,187.98x = 691,351,018,951.27
  5. Step 5: Solve for x
    x = 691,351,018,951.27/890,187.98
  6. Step 6: Final answer
    x = 776,634.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.