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Finding the Fourth Proportional to 3,018,978.30, 4,528,467.45 and 2,011,208.70

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Solution

The fourth proportional to 3,018,978.30, 4,528,467.45 and 2,011,208.70 is: 3,016,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018,978.30 : 4,528,467.45 = 2,011,208.70 : x
  2. Step 2: Convert to fraction form
    3,018,978.30/4,528,467.45 = 2,011,208.70/x
  3. Step 3: Cross multiply
    3,018,978.30x = 4,528,467.45 × 2,011,208.70
  4. Step 4: Simplify right side
    3,018,978.30x = 9,107,693,133,106.82
  5. Step 5: Solve for x
    x = 9,107,693,133,106.82/3,018,978.30
  6. Step 6: Final answer
    x = 3,016,813.05

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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.