Home / 742,653.54-1,024,883.01-403,143.66

Finding the Fourth Proportional to 742,653.54, 1,024,883.01 and 403,143.66

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Solution

The fourth proportional to 742,653.54, 1,024,883.01 and 403,143.66 is: 556,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,653.54 : 1,024,883.01 = 403,143.66 : x
  2. Step 2: Convert to fraction form
    742,653.54/1,024,883.01 = 403,143.66/x
  3. Step 3: Cross multiply
    742,653.54x = 1,024,883.01 × 403,143.66
  4. Step 4: Simplify right side
    742,653.54x = 413,175,087,723.22
  5. Step 5: Solve for x
    x = 413,175,087,723.22/742,653.54
  6. Step 6: Final answer
    x = 556,349.72

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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.