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Finding the Fourth Proportional to 561,631.68, 775,052.10 and 306,982.86

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Solution

The fourth proportional to 561,631.68, 775,052.10 and 306,982.86 is: 423,636.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,631.68 : 775,052.10 = 306,982.86 : x
  2. Step 2: Convert to fraction form
    561,631.68/775,052.10 = 306,982.86/x
  3. Step 3: Cross multiply
    561,631.68x = 775,052.10 × 306,982.86
  4. Step 4: Simplify right side
    561,631.68x = 237,927,710,307.01
  5. Step 5: Solve for x
    x = 237,927,710,307.01/561,631.68
  6. Step 6: Final answer
    x = 423,636.56

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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.