Home / 638,140.10-957,210.15-559,408.10

Finding the Fourth Proportional to 638,140.10, 957,210.15 and 559,408.10

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Solution

The fourth proportional to 638,140.10, 957,210.15 and 559,408.10 is: 839,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,140.10 : 957,210.15 = 559,408.10 : x
  2. Step 2: Convert to fraction form
    638,140.10/957,210.15 = 559,408.10/x
  3. Step 3: Cross multiply
    638,140.10x = 957,210.15 × 559,408.10
  4. Step 4: Simplify right side
    638,140.10x = 535,471,111,312.22
  5. Step 5: Solve for x
    x = 535,471,111,312.22/638,140.10
  6. Step 6: Final answer
    x = 839,112.15

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.