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Finding the Fourth Proportional to 611,330.40, 917,686.80 and 362,152.80

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Solution

The fourth proportional to 611,330.40, 917,686.80 and 362,152.80 is: 543,638.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,330.40 : 917,686.80 = 362,152.80 : x
  2. Step 2: Convert to fraction form
    611,330.40/917,686.80 = 362,152.80/x
  3. Step 3: Cross multiply
    611,330.40x = 917,686.80 × 362,152.80
  4. Step 4: Simplify right side
    611,330.40x = 332,342,844,143.04
  5. Step 5: Solve for x
    x = 332,342,844,143.04/611,330.40
  6. Step 6: Final answer
    x = 543,638.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.