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Finding the Fourth Proportional to 983,494.91, 1,357,330.87 and 620,900.03

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Solution

The fourth proportional to 983,494.91, 1,357,330.87 and 620,900.03 is: 856,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,494.91 : 1,357,330.87 = 620,900.03 : x
  2. Step 2: Convert to fraction form
    983,494.91/1,357,330.87 = 620,900.03/x
  3. Step 3: Cross multiply
    983,494.91x = 1,357,330.87 × 620,900.03
  4. Step 4: Simplify right side
    983,494.91x = 842,766,782,072.38
  5. Step 5: Solve for x
    x = 842,766,782,072.38/983,494.91
  6. Step 6: Final answer
    x = 856,910.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.