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Finding the Fourth Proportional to 630,337.22, 869,906.50 and 358,430.42

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Solution

The fourth proportional to 630,337.22, 869,906.50 and 358,430.42 is: 494,657.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,337.22 : 869,906.50 = 358,430.42 : x
  2. Step 2: Convert to fraction form
    630,337.22/869,906.50 = 358,430.42/x
  3. Step 3: Cross multiply
    630,337.22x = 869,906.50 × 358,430.42
  4. Step 4: Simplify right side
    630,337.22x = 311,800,952,155.73
  5. Step 5: Solve for x
    x = 311,800,952,155.73/630,337.22
  6. Step 6: Final answer
    x = 494,657.37

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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.