Home / 1,029,571.50-1,420,328.10-647,808.78

Finding the Fourth Proportional to 1,029,571.50, 1,420,328.10 and 647,808.78

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Solution

The fourth proportional to 1,029,571.50, 1,420,328.10 and 647,808.78 is: 893,673.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,571.50 : 1,420,328.10 = 647,808.78 : x
  2. Step 2: Convert to fraction form
    1,029,571.50/1,420,328.10 = 647,808.78/x
  3. Step 3: Cross multiply
    1,029,571.50x = 1,420,328.10 × 647,808.78
  4. Step 4: Simplify right side
    1,029,571.50x = 920,101,013,660.72
  5. Step 5: Solve for x
    x = 920,101,013,660.72/1,029,571.50
  6. Step 6: Final answer
    x = 893,673.74

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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.