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Finding the Fourth Proportional to 1,210,978.75, 1,816,724.49 and 357,983.14

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Solution

The fourth proportional to 1,210,978.75, 1,816,724.49 and 357,983.14 is: 537,050.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,978.75 : 1,816,724.49 = 357,983.14 : x
  2. Step 2: Convert to fraction form
    1,210,978.75/1,816,724.49 = 357,983.14/x
  3. Step 3: Cross multiply
    1,210,978.75x = 1,816,724.49 × 357,983.14
  4. Step 4: Simplify right side
    1,210,978.75x = 650,356,737,445.10
  5. Step 5: Solve for x
    x = 650,356,737,445.10/1,210,978.75
  6. Step 6: Final answer
    x = 537,050.50

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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.