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Finding the Fourth Proportional to 513,645.20, 717,703.60 and 513,645.20

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Solution

The fourth proportional to 513,645.20, 717,703.60 and 513,645.20 is: 717,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,645.20 : 717,703.60 = 513,645.20 : x
  2. Step 2: Convert to fraction form
    513,645.20/717,703.60 = 513,645.20/x
  3. Step 3: Cross multiply
    513,645.20x = 717,703.60 × 513,645.20
  4. Step 4: Simplify right side
    513,645.20x = 368,645,009,162.72
  5. Step 5: Solve for x
    x = 368,645,009,162.72/513,645.20
  6. Step 6: Final answer
    x = 717,703.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.