Home / 1,310,470.25-1,965,703.85-411,990.50

Finding the Fourth Proportional to 1,310,470.25, 1,965,703.85 and 411,990.50

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Solution

The fourth proportional to 1,310,470.25, 1,965,703.85 and 411,990.50 is: 617,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,470.25 : 1,965,703.85 = 411,990.50 : x
  2. Step 2: Convert to fraction form
    1,310,470.25/1,965,703.85 = 411,990.50/x
  3. Step 3: Cross multiply
    1,310,470.25x = 1,965,703.85 × 411,990.50
  4. Step 4: Simplify right side
    1,310,470.25x = 809,851,316,412.70
  5. Step 5: Solve for x
    x = 809,851,316,412.70/1,310,470.25
  6. Step 6: Final answer
    x = 617,985.28

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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.