Home / 431,569,285.60-646,928,775.60-213,253,322.80

Finding the Fourth Proportional to 431,569,285.60, 646,928,775.60 and 213,253,322.80

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Solution

The fourth proportional to 431,569,285.60, 646,928,775.60 and 213,253,322.80 is: 319,669,901.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,285.60 : 646,928,775.60 = 213,253,322.80 : x
  2. Step 2: Convert to fraction form
    431,569,285.60/646,928,775.60 = 213,253,322.80/x
  3. Step 3: Cross multiply
    431,569,285.60x = 646,928,775.60 × 213,253,322.80
  4. Step 4: Simplify right side
    431,569,285.60x = 137,959,711,011,635,584
  5. Step 5: Solve for x
    x = 137,959,711,011,635,584/431,569,285.60
  6. Step 6: Final answer
    x = 319,669,901.48

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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.