Home / 917,660.36-1,266,336.10-509,787.85

Finding the Fourth Proportional to 917,660.36, 1,266,336.10 and 509,787.85

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Solution

The fourth proportional to 917,660.36, 1,266,336.10 and 509,787.85 is: 703,487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,660.36 : 1,266,336.10 = 509,787.85 : x
  2. Step 2: Convert to fraction form
    917,660.36/1,266,336.10 = 509,787.85/x
  3. Step 3: Cross multiply
    917,660.36x = 1,266,336.10 × 509,787.85
  4. Step 4: Simplify right side
    917,660.36x = 645,562,755,247.45
  5. Step 5: Solve for x
    x = 645,562,755,247.45/917,660.36
  6. Step 6: Final answer
    x = 703,487.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.