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Finding the Fourth Proportional to 624,474.36, 861,795.48 and 382,710.22

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Solution

The fourth proportional to 624,474.36, 861,795.48 and 382,710.22 is: 528,152.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,474.36 : 861,795.48 = 382,710.22 : x
  2. Step 2: Convert to fraction form
    624,474.36/861,795.48 = 382,710.22/x
  3. Step 3: Cross multiply
    624,474.36x = 861,795.48 × 382,710.22
  4. Step 4: Simplify right side
    624,474.36x = 329,817,937,745.81
  5. Step 5: Solve for x
    x = 329,817,937,745.81/624,474.36
  6. Step 6: Final answer
    x = 528,152.89

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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.