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Finding the Fourth Proportional to 562,785.36, 776,643.66 and 308,136.48

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Solution

The fourth proportional to 562,785.36, 776,643.66 and 308,136.48 is: 425,228.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,785.36 : 776,643.66 = 308,136.48 : x
  2. Step 2: Convert to fraction form
    562,785.36/776,643.66 = 308,136.48/x
  3. Step 3: Cross multiply
    562,785.36x = 776,643.66 × 308,136.48
  4. Step 4: Simplify right side
    562,785.36x = 239,312,243,606.72
  5. Step 5: Solve for x
    x = 239,312,243,606.72/562,785.36
  6. Step 6: Final answer
    x = 425,228.27

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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.