Home / 918,698.80-1,378,048.20-665,444.20

Finding the Fourth Proportional to 918,698.80, 1,378,048.20 and 665,444.20

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Solution

The fourth proportional to 918,698.80, 1,378,048.20 and 665,444.20 is: 998,166.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,698.80 : 1,378,048.20 = 665,444.20 : x
  2. Step 2: Convert to fraction form
    918,698.80/1,378,048.20 = 665,444.20/x
  3. Step 3: Cross multiply
    918,698.80x = 1,378,048.20 × 665,444.20
  4. Step 4: Simplify right side
    918,698.80x = 917,014,182,010.44
  5. Step 5: Solve for x
    x = 917,014,182,010.44/918,698.80
  6. Step 6: Final answer
    x = 998,166.30

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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.