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Finding the Fourth Proportional to 607,260.80, 911,474.40 and 518,614.40

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Solution

The fourth proportional to 607,260.80, 911,474.40 and 518,614.40 is: 778,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,260.80 : 911,474.40 = 518,614.40 : x
  2. Step 2: Convert to fraction form
    607,260.80/911,474.40 = 518,614.40/x
  3. Step 3: Cross multiply
    607,260.80x = 911,474.40 × 518,614.40
  4. Step 4: Simplify right side
    607,260.80x = 472,703,749,071.36
  5. Step 5: Solve for x
    x = 472,703,749,071.36/607,260.80
  6. Step 6: Final answer
    x = 778,419.67

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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.