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Finding the Fourth Proportional to 810,762, 1,216,339.86 and 249,796.50

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Solution

The fourth proportional to 810,762, 1,216,339.86 and 249,796.50 is: 374,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,762 : 1,216,339.86 = 249,796.50 : x
  2. Step 2: Convert to fraction form
    810,762/1,216,339.86 = 249,796.50/x
  3. Step 3: Cross multiply
    810,762x = 1,216,339.86 × 249,796.50
  4. Step 4: Simplify right side
    810,762x = 303,837,439,838.49
  5. Step 5: Solve for x
    x = 303,837,439,838.49/810,762
  6. Step 6: Final answer
    x = 374,755.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.