Home / 1,419,209.80-2,128,814.70-971,312.20

Finding the Fourth Proportional to 1,419,209.80, 2,128,814.70 and 971,312.20

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Solution

The fourth proportional to 1,419,209.80, 2,128,814.70 and 971,312.20 is: 1,456,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,209.80 : 2,128,814.70 = 971,312.20 : x
  2. Step 2: Convert to fraction form
    1,419,209.80/2,128,814.70 = 971,312.20/x
  3. Step 3: Cross multiply
    1,419,209.80x = 2,128,814.70 × 971,312.20
  4. Step 4: Simplify right side
    1,419,209.80x = 2,067,743,689,649.34
  5. Step 5: Solve for x
    x = 2,067,743,689,649.34/1,419,209.80
  6. Step 6: Final answer
    x = 1,456,968.30

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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.