Home / 817,999.84-1,128,877.03-455,446.72

Finding the Fourth Proportional to 817,999.84, 1,128,877.03 and 455,446.72

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Solution

The fourth proportional to 817,999.84, 1,128,877.03 and 455,446.72 is: 628,537.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,999.84 : 1,128,877.03 = 455,446.72 : x
  2. Step 2: Convert to fraction form
    817,999.84/1,128,877.03 = 455,446.72/x
  3. Step 3: Cross multiply
    817,999.84x = 1,128,877.03 × 455,446.72
  4. Step 4: Simplify right side
    817,999.84x = 514,143,340,596.84
  5. Step 5: Solve for x
    x = 514,143,340,596.84/817,999.84
  6. Step 6: Final answer
    x = 628,537.21

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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.