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Finding the Fourth Proportional to 679,855.32, 938,206.53 and 369,760.59

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Solution

The fourth proportional to 679,855.32, 938,206.53 and 369,760.59 is: 510,272.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,855.32 : 938,206.53 = 369,760.59 : x
  2. Step 2: Convert to fraction form
    679,855.32/938,206.53 = 369,760.59/x
  3. Step 3: Cross multiply
    679,855.32x = 938,206.53 × 369,760.59
  4. Step 4: Simplify right side
    679,855.32x = 346,911,800,074.65
  5. Step 5: Solve for x
    x = 346,911,800,074.65/679,855.32
  6. Step 6: Final answer
    x = 510,272.98

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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.