Home / 1,478,485.80-2,216,853.90-769,897.80

Finding the Fourth Proportional to 1,478,485.80, 2,216,853.90 and 769,897.80

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Solution

The fourth proportional to 1,478,485.80, 2,216,853.90 and 769,897.80 is: 1,154,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,485.80 : 2,216,853.90 = 769,897.80 : x
  2. Step 2: Convert to fraction form
    1,478,485.80/2,216,853.90 = 769,897.80/x
  3. Step 3: Cross multiply
    1,478,485.80x = 2,216,853.90 × 769,897.80
  4. Step 4: Simplify right side
    1,478,485.80x = 1,706,750,940,531.42
  5. Step 5: Solve for x
    x = 1,706,750,940,531.42/1,478,485.80
  6. Step 6: Final answer
    x = 1,154,391.16

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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.