Home / 1,490,605.40-2,235,908.10-858,999.80

Finding the Fourth Proportional to 1,490,605.40, 2,235,908.10 and 858,999.80

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Solution

The fourth proportional to 1,490,605.40, 2,235,908.10 and 858,999.80 is: 1,288,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,605.40 : 2,235,908.10 = 858,999.80 : x
  2. Step 2: Convert to fraction form
    1,490,605.40/2,235,908.10 = 858,999.80/x
  3. Step 3: Cross multiply
    1,490,605.40x = 2,235,908.10 × 858,999.80
  4. Step 4: Simplify right side
    1,490,605.40x = 1,920,644,610,718.38
  5. Step 5: Solve for x
    x = 1,920,644,610,718.38/1,490,605.40
  6. Step 6: Final answer
    x = 1,288,499.70

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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.