Home / 919,299.40-1,267,587.06-647,280.28

Finding the Fourth Proportional to 919,299.40, 1,267,587.06 and 647,280.28

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Solution

The fourth proportional to 919,299.40, 1,267,587.06 and 647,280.28 is: 892,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,299.40 : 1,267,587.06 = 647,280.28 : x
  2. Step 2: Convert to fraction form
    919,299.40/1,267,587.06 = 647,280.28/x
  3. Step 3: Cross multiply
    919,299.40x = 1,267,587.06 × 647,280.28
  4. Step 4: Simplify right side
    919,299.40x = 820,484,107,121.18
  5. Step 5: Solve for x
    x = 820,484,107,121.18/919,299.40
  6. Step 6: Final answer
    x = 892,510.22

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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.