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Finding the Fourth Proportional to 578,762.07, 798,653.10 and 320,621.67

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Solution

The fourth proportional to 578,762.07, 798,653.10 and 320,621.67 is: 442,436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,762.07 : 798,653.10 = 320,621.67 : x
  2. Step 2: Convert to fraction form
    578,762.07/798,653.10 = 320,621.67/x
  3. Step 3: Cross multiply
    578,762.07x = 798,653.10 × 320,621.67
  4. Step 4: Simplify right side
    578,762.07x = 256,065,490,672.68
  5. Step 5: Solve for x
    x = 256,065,490,672.68/578,762.07
  6. Step 6: Final answer
    x = 442,436.55

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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.