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Finding the Fourth Proportional to 515,065.40, 772,598.10 and 488,821.40

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Solution

The fourth proportional to 515,065.40, 772,598.10 and 488,821.40 is: 733,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,065.40 : 772,598.10 = 488,821.40 : x
  2. Step 2: Convert to fraction form
    515,065.40/772,598.10 = 488,821.40/x
  3. Step 3: Cross multiply
    515,065.40x = 772,598.10 × 488,821.40
  4. Step 4: Simplify right side
    515,065.40x = 377,662,484,879.34
  5. Step 5: Solve for x
    x = 377,662,484,879.34/515,065.40
  6. Step 6: Final answer
    x = 733,232.10

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Similar ratio
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1.5x scale

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.