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Finding the Fourth Proportional to 821,703.30, 1,230,222.15 and 821,703.30

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Solution

The fourth proportional to 821,703.30, 1,230,222.15 and 821,703.30 is: 1,230,222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,703.30 : 1,230,222.15 = 821,703.30 : x
  2. Step 2: Convert to fraction form
    821,703.30/1,230,222.15 = 821,703.30/x
  3. Step 3: Cross multiply
    821,703.30x = 1,230,222.15 × 821,703.30
  4. Step 4: Simplify right side
    821,703.30x = 1,010,877,600,388.10
  5. Step 5: Solve for x
    x = 1,010,877,600,388.10/821,703.30
  6. Step 6: Final answer
    x = 1,230,222.15

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1.5x scale

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.