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Finding the Fourth Proportional to 742,894.48, 1,025,198.48 and 403,362.74

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Solution

The fourth proportional to 742,894.48, 1,025,198.48 and 403,362.74 is: 556,642.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,894.48 : 1,025,198.48 = 403,362.74 : x
  2. Step 2: Convert to fraction form
    742,894.48/1,025,198.48 = 403,362.74/x
  3. Step 3: Cross multiply
    742,894.48x = 1,025,198.48 × 403,362.74
  4. Step 4: Simplify right side
    742,894.48x = 413,526,867,936.64
  5. Step 5: Solve for x
    x = 413,526,867,936.64/742,894.48
  6. Step 6: Final answer
    x = 556,642.81

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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.