Home / 1,123,913.40-1,685,870.10-1,021,561.80

Finding the Fourth Proportional to 1,123,913.40, 1,685,870.10 and 1,021,561.80

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Solution

The fourth proportional to 1,123,913.40, 1,685,870.10 and 1,021,561.80 is: 1,532,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,913.40 : 1,685,870.10 = 1,021,561.80 : x
  2. Step 2: Convert to fraction form
    1,123,913.40/1,685,870.10 = 1,021,561.80/x
  3. Step 3: Cross multiply
    1,123,913.40x = 1,685,870.10 × 1,021,561.80
  4. Step 4: Simplify right side
    1,123,913.40x = 1,722,220,493,922.18
  5. Step 5: Solve for x
    x = 1,722,220,493,922.18/1,123,913.40
  6. Step 6: Final answer
    x = 1,532,342.70

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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.