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Finding the Fourth Proportional to 628,693.32, 865,943.97 and 483,220.92

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Solution

The fourth proportional to 628,693.32, 865,943.97 and 483,220.92 is: 665,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,693.32 : 865,943.97 = 483,220.92 : x
  2. Step 2: Convert to fraction form
    628,693.32/865,943.97 = 483,220.92/x
  3. Step 3: Cross multiply
    628,693.32x = 865,943.97 × 483,220.92
  4. Step 4: Simplify right side
    628,693.32x = 418,442,241,851.85
  5. Step 5: Solve for x
    x = 418,442,241,851.85/628,693.32
  6. Step 6: Final answer
    x = 665,574.50

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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.