Home / 1,385,280.30-2,079,475.65-1,071,129.90

Finding the Fourth Proportional to 1,385,280.30, 2,079,475.65 and 1,071,129.90

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Solution

The fourth proportional to 1,385,280.30, 2,079,475.65 and 1,071,129.90 is: 1,607,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,280.30 : 2,079,475.65 = 1,071,129.90 : x
  2. Step 2: Convert to fraction form
    1,385,280.30/2,079,475.65 = 1,071,129.90/x
  3. Step 3: Cross multiply
    1,385,280.30x = 2,079,475.65 × 1,071,129.90
  4. Step 4: Simplify right side
    1,385,280.30x = 2,227,388,545,036.93
  5. Step 5: Solve for x
    x = 2,227,388,545,036.93/1,385,280.30
  6. Step 6: Final answer
    x = 1,607,897.37

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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.