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Finding the Fourth Proportional to 873,408.64, 1,309,333.80 and 340,805.80

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Solution

The fourth proportional to 873,408.64, 1,309,333.80 and 340,805.80 is: 510,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,408.64 : 1,309,333.80 = 340,805.80 : x
  2. Step 2: Convert to fraction form
    873,408.64/1,309,333.80 = 340,805.80/x
  3. Step 3: Cross multiply
    873,408.64x = 1,309,333.80 × 340,805.80
  4. Step 4: Simplify right side
    873,408.64x = 446,228,553,176.04
  5. Step 5: Solve for x
    x = 446,228,553,176.04/873,408.64
  6. Step 6: Final answer
    x = 510,904.67

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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.