Home / 920,518.80-1,270,330.20-518,110.80

Finding the Fourth Proportional to 920,518.80, 1,270,330.20 and 518,110.80

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Solution

The fourth proportional to 920,518.80, 1,270,330.20 and 518,110.80 is: 715,000.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,518.80 : 1,270,330.20 = 518,110.80 : x
  2. Step 2: Convert to fraction form
    920,518.80/1,270,330.20 = 518,110.80/x
  3. Step 3: Cross multiply
    920,518.80x = 1,270,330.20 × 518,110.80
  4. Step 4: Simplify right side
    920,518.80x = 658,171,796,186.16
  5. Step 5: Solve for x
    x = 658,171,796,186.16/920,518.80
  6. Step 6: Final answer
    x = 715,000.93

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Double scale
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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.