Home / 817,775.02-1,128,529.44-455,191.12

Finding the Fourth Proportional to 817,775.02, 1,128,529.44 and 455,191.12

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Solution

The fourth proportional to 817,775.02, 1,128,529.44 and 455,191.12 is: 628,163.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,775.02 : 1,128,529.44 = 455,191.12 : x
  2. Step 2: Convert to fraction form
    817,775.02/1,128,529.44 = 455,191.12/x
  3. Step 3: Cross multiply
    817,775.02x = 1,128,529.44 × 455,191.12
  4. Step 4: Simplify right side
    817,775.02x = 513,696,579,746.57
  5. Step 5: Solve for x
    x = 513,696,579,746.57/817,775.02
  6. Step 6: Final answer
    x = 628,163.70

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Double scale
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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.