Home / 1,188,015.40-1,782,023.10-429,855.40

Finding the Fourth Proportional to 1,188,015.40, 1,782,023.10 and 429,855.40

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Solution

The fourth proportional to 1,188,015.40, 1,782,023.10 and 429,855.40 is: 644,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,015.40 : 1,782,023.10 = 429,855.40 : x
  2. Step 2: Convert to fraction form
    1,188,015.40/1,782,023.10 = 429,855.40/x
  3. Step 3: Cross multiply
    1,188,015.40x = 1,782,023.10 × 429,855.40
  4. Step 4: Simplify right side
    1,188,015.40x = 766,012,252,459.74
  5. Step 5: Solve for x
    x = 766,012,252,459.74/1,188,015.40
  6. Step 6: Final answer
    x = 644,783.10

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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.