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Finding the Fourth Proportional to 3,042,978.90, 4,564,913.40 and 913,231.32

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Solution

The fourth proportional to 3,042,978.90, 4,564,913.40 and 913,231.32 is: 1,369,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042,978.90 : 4,564,913.40 = 913,231.32 : x
  2. Step 2: Convert to fraction form
    3,042,978.90/4,564,913.40 = 913,231.32/x
  3. Step 3: Cross multiply
    3,042,978.90x = 4,564,913.40 × 913,231.32
  4. Step 4: Simplify right side
    3,042,978.90x = 4,168,821,889,967.69
  5. Step 5: Solve for x
    x = 4,168,821,889,967.69/3,042,978.90
  6. Step 6: Final answer
    x = 1,369,980.54

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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.