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Finding the Fourth Proportional to 518,193.77, 776,700.99 and 315,342.50

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Solution

The fourth proportional to 518,193.77, 776,700.99 and 315,342.50 is: 472,654.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,193.77 : 776,700.99 = 315,342.50 : x
  2. Step 2: Convert to fraction form
    518,193.77/776,700.99 = 315,342.50/x
  3. Step 3: Cross multiply
    518,193.77x = 776,700.99 × 315,342.50
  4. Step 4: Simplify right side
    518,193.77x = 244,926,828,055.57
  5. Step 5: Solve for x
    x = 244,926,828,055.57/518,193.77
  6. Step 6: Final answer
    x = 472,654.91

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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.