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Finding the Fourth Proportional to 608,978.60, 913,467.90 and 576,319.40

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Solution

The fourth proportional to 608,978.60, 913,467.90 and 576,319.40 is: 864,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,978.60 : 913,467.90 = 576,319.40 : x
  2. Step 2: Convert to fraction form
    608,978.60/913,467.90 = 576,319.40/x
  3. Step 3: Cross multiply
    608,978.60x = 913,467.90 × 576,319.40
  4. Step 4: Simplify right side
    608,978.60x = 526,449,272,047.26
  5. Step 5: Solve for x
    x = 526,449,272,047.26/608,978.60
  6. Step 6: Final answer
    x = 864,479.10

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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.