Home / 889,016.61-1,333,389.15-289,976.70

Finding the Fourth Proportional to 889,016.61, 1,333,389.15 and 289,976.70

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Solution

The fourth proportional to 889,016.61, 1,333,389.15 and 289,976.70 is: 434,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,016.61 : 1,333,389.15 = 289,976.70 : x
  2. Step 2: Convert to fraction form
    889,016.61/1,333,389.15 = 289,976.70/x
  3. Step 3: Cross multiply
    889,016.61x = 1,333,389.15 × 289,976.70
  4. Step 4: Simplify right side
    889,016.61x = 386,651,785,532.81
  5. Step 5: Solve for x
    x = 386,651,785,532.81/889,016.61
  6. Step 6: Final answer
    x = 434,920.77

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1.5x scale

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.