Home / 779,813.20-1,169,719.80-405,787.60

Finding the Fourth Proportional to 779,813.20, 1,169,719.80 and 405,787.60

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Solution

The fourth proportional to 779,813.20, 1,169,719.80 and 405,787.60 is: 608,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,813.20 : 1,169,719.80 = 405,787.60 : x
  2. Step 2: Convert to fraction form
    779,813.20/1,169,719.80 = 405,787.60/x
  3. Step 3: Cross multiply
    779,813.20x = 1,169,719.80 × 405,787.60
  4. Step 4: Simplify right side
    779,813.20x = 474,657,790,314.48
  5. Step 5: Solve for x
    x = 474,657,790,314.48/779,813.20
  6. Step 6: Final answer
    x = 608,681.40

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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.