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Finding the Fourth Proportional to 569,721.42, 786,183.54 and 311,547.12

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Solution

The fourth proportional to 569,721.42, 786,183.54 and 311,547.12 is: 429,917.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,721.42 : 786,183.54 = 311,547.12 : x
  2. Step 2: Convert to fraction form
    569,721.42/786,183.54 = 311,547.12/x
  3. Step 3: Cross multiply
    569,721.42x = 786,183.54 × 311,547.12
  4. Step 4: Simplify right side
    569,721.42x = 244,933,217,678.41
  5. Step 5: Solve for x
    x = 244,933,217,678.41/569,721.42
  6. Step 6: Final answer
    x = 429,917.52

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Similar ratio
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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.