Home / 969,840.12-1,338,420.89-540,120.25

Finding the Fourth Proportional to 969,840.12, 1,338,420.89 and 540,120.25

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Solution

The fourth proportional to 969,840.12, 1,338,420.89 and 540,120.25 is: 745,389.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,840.12 : 1,338,420.89 = 540,120.25 : x
  2. Step 2: Convert to fraction form
    969,840.12/1,338,420.89 = 540,120.25/x
  3. Step 3: Cross multiply
    969,840.12x = 1,338,420.89 × 540,120.25
  4. Step 4: Simplify right side
    969,840.12x = 722,908,228,735.35
  5. Step 5: Solve for x
    x = 722,908,228,735.35/969,840.12
  6. Step 6: Final answer
    x = 745,389.07

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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.