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Finding the Fourth Proportional to 480,563.74, 724,089.53 and 398,157.58

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Solution

The fourth proportional to 480,563.74, 724,089.53 and 398,157.58 is: 599,924.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,563.74 : 724,089.53 = 398,157.58 : x
  2. Step 2: Convert to fraction form
    480,563.74/724,089.53 = 398,157.58/x
  3. Step 3: Cross multiply
    480,563.74x = 724,089.53 × 398,157.58
  4. Step 4: Simplify right side
    480,563.74x = 288,301,734,968.14
  5. Step 5: Solve for x
    x = 288,301,734,968.14/480,563.74
  6. Step 6: Final answer
    x = 599,924.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.