Home / 753,383.63-1,039,681.95-409,220.21

Finding the Fourth Proportional to 753,383.63, 1,039,681.95 and 409,220.21

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Solution

The fourth proportional to 753,383.63, 1,039,681.95 and 409,220.21 is: 564,730.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,383.63 : 1,039,681.95 = 409,220.21 : x
  2. Step 2: Convert to fraction form
    753,383.63/1,039,681.95 = 409,220.21/x
  3. Step 3: Cross multiply
    753,383.63x = 1,039,681.95 × 409,220.21
  4. Step 4: Simplify right side
    753,383.63x = 425,458,868,511.41
  5. Step 5: Solve for x
    x = 425,458,868,511.41/753,383.63
  6. Step 6: Final answer
    x = 564,730.71

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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.