Home / 989,858.10-1,484,787.15-429,986.10

Finding the Fourth Proportional to 989,858.10, 1,484,787.15 and 429,986.10

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Solution

The fourth proportional to 989,858.10, 1,484,787.15 and 429,986.10 is: 644,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,858.10 : 1,484,787.15 = 429,986.10 : x
  2. Step 2: Convert to fraction form
    989,858.10/1,484,787.15 = 429,986.10/x
  3. Step 3: Cross multiply
    989,858.10x = 1,484,787.15 × 429,986.10
  4. Step 4: Simplify right side
    989,858.10x = 638,437,835,958.62
  5. Step 5: Solve for x
    x = 638,437,835,958.62/989,858.10
  6. Step 6: Final answer
    x = 644,979.15

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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.