Home / 1,038,500.20-1,557,750.30-478,628.20

Finding the Fourth Proportional to 1,038,500.20, 1,557,750.30 and 478,628.20

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Solution

The fourth proportional to 1,038,500.20, 1,557,750.30 and 478,628.20 is: 717,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,500.20 : 1,557,750.30 = 478,628.20 : x
  2. Step 2: Convert to fraction form
    1,038,500.20/1,557,750.30 = 478,628.20/x
  3. Step 3: Cross multiply
    1,038,500.20x = 1,557,750.30 × 478,628.20
  4. Step 4: Simplify right side
    1,038,500.20x = 745,583,222,138.46
  5. Step 5: Solve for x
    x = 745,583,222,138.46/1,038,500.20
  6. Step 6: Final answer
    x = 717,942.30

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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.