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Finding the Fourth Proportional to 486,368.60, 730,013.70 and 299,744.60

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Solution

The fourth proportional to 486,368.60, 730,013.70 and 299,744.60 is: 449,900.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,368.60 : 730,013.70 = 299,744.60 : x
  2. Step 2: Convert to fraction form
    486,368.60/730,013.70 = 299,744.60/x
  3. Step 3: Cross multiply
    486,368.60x = 730,013.70 × 299,744.60
  4. Step 4: Simplify right side
    486,368.60x = 218,817,664,501.02
  5. Step 5: Solve for x
    x = 218,817,664,501.02/486,368.60
  6. Step 6: Final answer
    x = 449,900.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.