Home / 920,395.08-1,269,840.78-538,151.22

Finding the Fourth Proportional to 920,395.08, 1,269,840.78 and 538,151.22

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Solution

The fourth proportional to 920,395.08, 1,269,840.78 and 538,151.22 is: 742,470.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,395.08 : 1,269,840.78 = 538,151.22 : x
  2. Step 2: Convert to fraction form
    920,395.08/1,269,840.78 = 538,151.22/x
  3. Step 3: Cross multiply
    920,395.08x = 1,269,840.78 × 538,151.22
  4. Step 4: Simplify right side
    920,395.08x = 683,366,364,962.75
  5. Step 5: Solve for x
    x = 683,366,364,962.75/920,395.08
  6. Step 6: Final answer
    x = 742,470.68

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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.