Home / 817,696.80-1,128,419.92-460,000.80

Finding the Fourth Proportional to 817,696.80, 1,128,419.92 and 460,000.80

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Solution

The fourth proportional to 817,696.80, 1,128,419.92 and 460,000.80 is: 634,800.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,696.80 : 1,128,419.92 = 460,000.80 : x
  2. Step 2: Convert to fraction form
    817,696.80/1,128,419.92 = 460,000.80/x
  3. Step 3: Cross multiply
    817,696.80x = 1,128,419.92 × 460,000.80
  4. Step 4: Simplify right side
    817,696.80x = 519,074,065,935.94
  5. Step 5: Solve for x
    x = 519,074,065,935.94/817,696.80
  6. Step 6: Final answer
    x = 634,800.17

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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.