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Finding the Fourth Proportional to 656,778.42, 983,390.85 and 340,570.62

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Solution

The fourth proportional to 656,778.42, 983,390.85 and 340,570.62 is: 509,934.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,778.42 : 983,390.85 = 340,570.62 : x
  2. Step 2: Convert to fraction form
    656,778.42/983,390.85 = 340,570.62/x
  3. Step 3: Cross multiply
    656,778.42x = 983,390.85 × 340,570.62
  4. Step 4: Simplify right side
    656,778.42x = 334,914,031,486.83
  5. Step 5: Solve for x
    x = 334,914,031,486.83/656,778.42
  6. Step 6: Final answer
    x = 509,934.59

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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.