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Finding the Fourth Proportional to 480,802.80, 663,299.37 and 289,707.60

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Solution

The fourth proportional to 480,802.80, 663,299.37 and 289,707.60 is: 399,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,802.80 : 663,299.37 = 289,707.60 : x
  2. Step 2: Convert to fraction form
    480,802.80/663,299.37 = 289,707.60/x
  3. Step 3: Cross multiply
    480,802.80x = 663,299.37 × 289,707.60
  4. Step 4: Simplify right side
    480,802.80x = 192,162,868,564.21
  5. Step 5: Solve for x
    x = 192,162,868,564.21/480,802.80
  6. Step 6: Final answer
    x = 399,670.86

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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.