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Finding the Fourth Proportional to 490,693.60, 736,040.40 and 384,405.40

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Solution

The fourth proportional to 490,693.60, 736,040.40 and 384,405.40 is: 576,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,693.60 : 736,040.40 = 384,405.40 : x
  2. Step 2: Convert to fraction form
    490,693.60/736,040.40 = 384,405.40/x
  3. Step 3: Cross multiply
    490,693.60x = 736,040.40 × 384,405.40
  4. Step 4: Simplify right side
    490,693.60x = 282,937,904,378.16
  5. Step 5: Solve for x
    x = 282,937,904,378.16/490,693.60
  6. Step 6: Final answer
    x = 576,608.10

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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.