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Finding the Fourth Proportional to 561,839.84, 775,333.68 and 307,188.32

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Solution

The fourth proportional to 561,839.84, 775,333.68 and 307,188.32 is: 423,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,839.84 : 775,333.68 = 307,188.32 : x
  2. Step 2: Convert to fraction form
    561,839.84/775,333.68 = 307,188.32/x
  3. Step 3: Cross multiply
    561,839.84x = 775,333.68 × 307,188.32
  4. Step 4: Simplify right side
    561,839.84x = 238,173,450,598.62
  5. Step 5: Solve for x
    x = 238,173,450,598.62/561,839.84
  6. Step 6: Final answer
    x = 423,916.98

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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.