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Finding the Fourth Proportional to 610,779.24, 843,271.20 and 393,085.44

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Solution

The fourth proportional to 610,779.24, 843,271.20 and 393,085.44 is: 542,712.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,779.24 : 843,271.20 = 393,085.44 : x
  2. Step 2: Convert to fraction form
    610,779.24/843,271.20 = 393,085.44/x
  3. Step 3: Cross multiply
    610,779.24x = 843,271.20 × 393,085.44
  4. Step 4: Simplify right side
    610,779.24x = 331,477,630,691.33
  5. Step 5: Solve for x
    x = 331,477,630,691.33/610,779.24
  6. Step 6: Final answer
    x = 542,712.67

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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.