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Finding the Fourth Proportional to 685,527.61, 946,027.50 and 379,603.98

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Solution

The fourth proportional to 685,527.61, 946,027.50 and 379,603.98 is: 523,853.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,527.61 : 946,027.50 = 379,603.98 : x
  2. Step 2: Convert to fraction form
    685,527.61/946,027.50 = 379,603.98/x
  3. Step 3: Cross multiply
    685,527.61x = 946,027.50 × 379,603.98
  4. Step 4: Simplify right side
    685,527.61x = 359,115,799,459.31
  5. Step 5: Solve for x
    x = 359,115,799,459.31/685,527.61
  6. Step 6: Final answer
    x = 523,853.15

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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.