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Finding the Fourth Proportional to 538,736.65, 742,683.81 and 423,815.55

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Solution

The fourth proportional to 538,736.65, 742,683.81 and 423,815.55 is: 584,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,736.65 : 742,683.81 = 423,815.55 : x
  2. Step 2: Convert to fraction form
    538,736.65/742,683.81 = 423,815.55/x
  3. Step 3: Cross multiply
    538,736.65x = 742,683.81 × 423,815.55
  4. Step 4: Simplify right side
    538,736.65x = 314,760,943,697.83
  5. Step 5: Solve for x
    x = 314,760,943,697.83/538,736.65
  6. Step 6: Final answer
    x = 584,257.53

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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.