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Finding the Fourth Proportional to 480,696.61, 724,289.99 and 398,290.45

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Solution

The fourth proportional to 480,696.61, 724,289.99 and 398,290.45 is: 600,124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,696.61 : 724,289.99 = 398,290.45 : x
  2. Step 2: Convert to fraction form
    480,696.61/724,289.99 = 398,290.45/x
  3. Step 3: Cross multiply
    480,696.61x = 724,289.99 × 398,290.45
  4. Step 4: Simplify right side
    480,696.61x = 288,477,785,051.87
  5. Step 5: Solve for x
    x = 288,477,785,051.87/480,696.61
  6. Step 6: Final answer
    x = 600,124.44

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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.