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Finding the Fourth Proportional to 562,644.28, 776,457.66 and 308,019.16

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Solution

The fourth proportional to 562,644.28, 776,457.66 and 308,019.16 is: 425,071.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,644.28 : 776,457.66 = 308,019.16 : x
  2. Step 2: Convert to fraction form
    562,644.28/776,457.66 = 308,019.16/x
  3. Step 3: Cross multiply
    562,644.28x = 776,457.66 × 308,019.16
  4. Step 4: Simplify right side
    562,644.28x = 239,163,836,208.77
  5. Step 5: Solve for x
    x = 239,163,836,208.77/562,644.28
  6. Step 6: Final answer
    x = 425,071.12

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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.