Home / 779,643.60-1,169,854.20-442,942.80

Finding the Fourth Proportional to 779,643.60, 1,169,854.20 and 442,942.80

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Solution

The fourth proportional to 779,643.60, 1,169,854.20 and 442,942.80 is: 664,635.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,643.60 : 1,169,854.20 = 442,942.80 : x
  2. Step 2: Convert to fraction form
    779,643.60/1,169,854.20 = 442,942.80/x
  3. Step 3: Cross multiply
    779,643.60x = 1,169,854.20 × 442,942.80
  4. Step 4: Simplify right side
    779,643.60x = 518,178,494,939.76
  5. Step 5: Solve for x
    x = 518,178,494,939.76/779,643.60
  6. Step 6: Final answer
    x = 664,635.09

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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.