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Finding the Fourth Proportional to 612,905.21, 846,225.86 and 383,555.22

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Solution

The fourth proportional to 612,905.21, 846,225.86 and 383,555.22 is: 529,566.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,905.21 : 846,225.86 = 383,555.22 : x
  2. Step 2: Convert to fraction form
    612,905.21/846,225.86 = 383,555.22/x
  3. Step 3: Cross multiply
    612,905.21x = 846,225.86 × 383,555.22
  4. Step 4: Simplify right side
    612,905.21x = 324,574,345,901.99
  5. Step 5: Solve for x
    x = 324,574,345,901.99/612,905.21
  6. Step 6: Final answer
    x = 529,566.96

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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.