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Finding the Fourth Proportional to 480,805.80, 663,303.51 and 289,710.60

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Solution

The fourth proportional to 480,805.80, 663,303.51 and 289,710.60 is: 399,675.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,805.80 : 663,303.51 = 289,710.60 : x
  2. Step 2: Convert to fraction form
    480,805.80/663,303.51 = 289,710.60/x
  3. Step 3: Cross multiply
    480,805.80x = 663,303.51 × 289,710.60
  4. Step 4: Simplify right side
    480,805.80x = 192,166,057,864.21
  5. Step 5: Solve for x
    x = 192,166,057,864.21/480,805.80
  6. Step 6: Final answer
    x = 399,675.00

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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.