Home / 747,205.80-1,120,808.70-684,220.20

Finding the Fourth Proportional to 747,205.80, 1,120,808.70 and 684,220.20

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Solution

The fourth proportional to 747,205.80, 1,120,808.70 and 684,220.20 is: 1,026,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,205.80 : 1,120,808.70 = 684,220.20 : x
  2. Step 2: Convert to fraction form
    747,205.80/1,120,808.70 = 684,220.20/x
  3. Step 3: Cross multiply
    747,205.80x = 1,120,808.70 × 684,220.20
  4. Step 4: Simplify right side
    747,205.80x = 766,879,952,875.74
  5. Step 5: Solve for x
    x = 766,879,952,875.74/747,205.80
  6. Step 6: Final answer
    x = 1,026,330.30

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Double scale
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Similar ratio
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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.