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Finding the Fourth Proportional to 676,345.50, 933,386.13 and 374,539.50

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Solution

The fourth proportional to 676,345.50, 933,386.13 and 374,539.50 is: 516,880.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,345.50 : 933,386.13 = 374,539.50 : x
  2. Step 2: Convert to fraction form
    676,345.50/933,386.13 = 374,539.50/x
  3. Step 3: Cross multiply
    676,345.50x = 933,386.13 × 374,539.50
  4. Step 4: Simplify right side
    676,345.50x = 349,589,974,437.14
  5. Step 5: Solve for x
    x = 349,589,974,437.14/676,345.50
  6. Step 6: Final answer
    x = 516,880.76

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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.