Home / 1,421,978.34-2,133,071.31-411,105.60

Finding the Fourth Proportional to 1,421,978.34, 2,133,071.31 and 411,105.60

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Solution

The fourth proportional to 1,421,978.34, 2,133,071.31 and 411,105.60 is: 616,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,978.34 : 2,133,071.31 = 411,105.60 : x
  2. Step 2: Convert to fraction form
    1,421,978.34/2,133,071.31 = 411,105.60/x
  3. Step 3: Cross multiply
    1,421,978.34x = 2,133,071.31 × 411,105.60
  4. Step 4: Simplify right side
    1,421,978.34x = 876,917,554,782.96
  5. Step 5: Solve for x
    x = 876,917,554,782.96/1,421,978.34
  6. Step 6: Final answer
    x = 616,688.40

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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.