Home / 557,016.12-768,700.53-315,293.55

Finding the Fourth Proportional to 557,016.12, 768,700.53 and 315,293.55

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Solution

The fourth proportional to 557,016.12, 768,700.53 and 315,293.55 is: 435,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,016.12 : 768,700.53 = 315,293.55 : x
  2. Step 2: Convert to fraction form
    557,016.12/768,700.53 = 315,293.55/x
  3. Step 3: Cross multiply
    557,016.12x = 768,700.53 × 315,293.55
  4. Step 4: Simplify right side
    557,016.12x = 242,366,318,990.58
  5. Step 5: Solve for x
    x = 242,366,318,990.58/557,016.12
  6. Step 6: Final answer
    x = 435,115.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.