Home / 1,029,130.40-1,543,695.60-319,230.20

Finding the Fourth Proportional to 1,029,130.40, 1,543,695.60 and 319,230.20

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Solution

The fourth proportional to 1,029,130.40, 1,543,695.60 and 319,230.20 is: 478,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,130.40 : 1,543,695.60 = 319,230.20 : x
  2. Step 2: Convert to fraction form
    1,029,130.40/1,543,695.60 = 319,230.20/x
  3. Step 3: Cross multiply
    1,029,130.40x = 1,543,695.60 × 319,230.20
  4. Step 4: Simplify right side
    1,029,130.40x = 492,794,255,127.12
  5. Step 5: Solve for x
    x = 492,794,255,127.12/1,029,130.40
  6. Step 6: Final answer
    x = 478,845.30

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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.