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Finding the Fourth Proportional to 618,218.60, 853,433.86 and 414,402.67

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Solution

The fourth proportional to 618,218.60, 853,433.86 and 414,402.67 is: 572,071.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,218.60 : 853,433.86 = 414,402.67 : x
  2. Step 2: Convert to fraction form
    618,218.60/853,433.86 = 414,402.67/x
  3. Step 3: Cross multiply
    618,218.60x = 853,433.86 × 414,402.67
  4. Step 4: Simplify right side
    618,218.60x = 353,665,271,899.70
  5. Step 5: Solve for x
    x = 353,665,271,899.70/618,218.60
  6. Step 6: Final answer
    x = 572,071.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.