Home / 905,184.30-1,357,776.45-485,280.30

Finding the Fourth Proportional to 905,184.30, 1,357,776.45 and 485,280.30

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Solution

The fourth proportional to 905,184.30, 1,357,776.45 and 485,280.30 is: 727,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,184.30 : 1,357,776.45 = 485,280.30 : x
  2. Step 2: Convert to fraction form
    905,184.30/1,357,776.45 = 485,280.30/x
  3. Step 3: Cross multiply
    905,184.30x = 1,357,776.45 × 485,280.30
  4. Step 4: Simplify right side
    905,184.30x = 658,902,162,988.94
  5. Step 5: Solve for x
    x = 658,902,162,988.94/905,184.30
  6. Step 6: Final answer
    x = 727,920.45

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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.