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Finding the Fourth Proportional to 562,862.20, 776,748.54 and 308,211.16

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Solution

The fourth proportional to 562,862.20, 776,748.54 and 308,211.16 is: 425,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,862.20 : 776,748.54 = 308,211.16 : x
  2. Step 2: Convert to fraction form
    562,862.20/776,748.54 = 308,211.16/x
  3. Step 3: Cross multiply
    562,862.20x = 776,748.54 × 308,211.16
  4. Step 4: Simplify right side
    562,862.20x = 239,402,568,541.71
  5. Step 5: Solve for x
    x = 239,402,568,541.71/562,862.20
  6. Step 6: Final answer
    x = 425,330.69

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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.