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Finding the Fourth Proportional to 562,765.68, 776,690.55 and 320,992.74

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Solution

The fourth proportional to 562,765.68, 776,690.55 and 320,992.74 is: 443,012.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,765.68 : 776,690.55 = 320,992.74 : x
  2. Step 2: Convert to fraction form
    562,765.68/776,690.55 = 320,992.74/x
  3. Step 3: Cross multiply
    562,765.68x = 776,690.55 × 320,992.74
  4. Step 4: Simplify right side
    562,765.68x = 249,312,027,776.61
  5. Step 5: Solve for x
    x = 249,312,027,776.61/562,765.68
  6. Step 6: Final answer
    x = 443,012.14

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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.