Home / 808,091.40-1,115,145.54-445,506.78

Finding the Fourth Proportional to 808,091.40, 1,115,145.54 and 445,506.78

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Solution

The fourth proportional to 808,091.40, 1,115,145.54 and 445,506.78 is: 614,788.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,091.40 : 1,115,145.54 = 445,506.78 : x
  2. Step 2: Convert to fraction form
    808,091.40/1,115,145.54 = 445,506.78/x
  3. Step 3: Cross multiply
    808,091.40x = 1,115,145.54 × 445,506.78
  4. Step 4: Simplify right side
    808,091.40x = 496,804,898,756.76
  5. Step 5: Solve for x
    x = 496,804,898,756.76/808,091.40
  6. Step 6: Final answer
    x = 614,788.00

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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.