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Finding the Fourth Proportional to 2,475,363,978.40, 3,711,770,509.20 and 921,855,647.20

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Solution

The fourth proportional to 2,475,363,978.40, 3,711,770,509.20 and 921,855,647.20 is: 1,382,308,474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475,363,978.40 : 3,711,770,509.20 = 921,855,647.20 : x
  2. Step 2: Convert to fraction form
    2,475,363,978.40/3,711,770,509.20 = 921,855,647.20/x
  3. Step 3: Cross multiply
    2,475,363,978.40x = 3,711,770,509.20 × 921,855,647.20
  4. Step 4: Simplify right side
    2,475,363,978.40x = 3,421,716,605,016,439,808
  5. Step 5: Solve for x
    x = 3,421,716,605,016,439,808/2,475,363,978.40
  6. Step 6: Final answer
    x = 1,382,308,474.58

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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.