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Finding the Fourth Proportional to 480,803.80, 663,300.75 and 289,708.60

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Solution

The fourth proportional to 480,803.80, 663,300.75 and 289,708.60 is: 399,672.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,803.80 : 663,300.75 = 289,708.60 : x
  2. Step 2: Convert to fraction form
    480,803.80/663,300.75 = 289,708.60/x
  3. Step 3: Cross multiply
    480,803.80x = 663,300.75 × 289,708.60
  4. Step 4: Simplify right side
    480,803.80x = 192,163,931,661.45
  5. Step 5: Solve for x
    x = 192,163,931,661.45/480,803.80
  6. Step 6: Final answer
    x = 399,672.24

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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.