Home / 1,290,064.40-1,924,211.76-1,120,249.36

Finding the Fourth Proportional to 1,290,064.40, 1,924,211.76 and 1,120,249.36

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Solution

The fourth proportional to 1,290,064.40, 1,924,211.76 and 1,120,249.36 is: 1,670,922.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,064.40 : 1,924,211.76 = 1,120,249.36 : x
  2. Step 2: Convert to fraction form
    1,290,064.40/1,924,211.76 = 1,120,249.36/x
  3. Step 3: Cross multiply
    1,290,064.40x = 1,924,211.76 × 1,120,249.36
  4. Step 4: Simplify right side
    1,290,064.40x = 2,155,596,992,644.47
  5. Step 5: Solve for x
    x = 2,155,596,992,644.47/1,290,064.40
  6. Step 6: Final answer
    x = 1,670,922.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.