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Finding the Fourth Proportional to 563,285.34, 777,364.90 and 321,645.53

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Solution

The fourth proportional to 563,285.34, 777,364.90 and 321,645.53 is: 443,888.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,285.34 : 777,364.90 = 321,645.53 : x
  2. Step 2: Convert to fraction form
    563,285.34/777,364.90 = 321,645.53/x
  3. Step 3: Cross multiply
    563,285.34x = 777,364.90 × 321,645.53
  4. Step 4: Simplify right side
    563,285.34x = 250,035,946,403.20
  5. Step 5: Solve for x
    x = 250,035,946,403.20/563,285.34
  6. Step 6: Final answer
    x = 443,888.61

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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.