Home / 1,391,744-1,920,610.77-811,311.77

Finding the Fourth Proportional to 1,391,744, 1,920,610.77 and 811,311.77

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Solution

The fourth proportional to 1,391,744, 1,920,610.77 and 811,311.77 is: 1,119,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,744 : 1,920,610.77 = 811,311.77 : x
  2. Step 2: Convert to fraction form
    1,391,744/1,920,610.77 = 811,311.77/x
  3. Step 3: Cross multiply
    1,391,744x = 1,920,610.77 × 811,311.77
  4. Step 4: Simplify right side
    1,391,744x = 1,558,214,123,289.76
  5. Step 5: Solve for x
    x = 1,558,214,123,289.76/1,391,744
  6. Step 6: Final answer
    x = 1,119,612.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.