Home / 1,029,000.80-1,543,501.20-319,100.60

Finding the Fourth Proportional to 1,029,000.80, 1,543,501.20 and 319,100.60

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Solution

The fourth proportional to 1,029,000.80, 1,543,501.20 and 319,100.60 is: 478,650.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,000.80 : 1,543,501.20 = 319,100.60 : x
  2. Step 2: Convert to fraction form
    1,029,000.80/1,543,501.20 = 319,100.60/x
  3. Step 3: Cross multiply
    1,029,000.80x = 1,543,501.20 × 319,100.60
  4. Step 4: Simplify right side
    1,029,000.80x = 492,532,159,020.72
  5. Step 5: Solve for x
    x = 492,532,159,020.72/1,029,000.80
  6. Step 6: Final answer
    x = 478,650.90

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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.