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Finding the Fourth Proportional to 612,000.64, 918,156.69 and 359,494.69

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Solution

The fourth proportional to 612,000.64, 918,156.69 and 359,494.69 is: 539,333.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,000.64 : 918,156.69 = 359,494.69 : x
  2. Step 2: Convert to fraction form
    612,000.64/918,156.69 = 359,494.69/x
  3. Step 3: Cross multiply
    612,000.64x = 918,156.69 × 359,494.69
  4. Step 4: Simplify right side
    612,000.64x = 330,072,449,153.46
  5. Step 5: Solve for x
    x = 330,072,449,153.46/612,000.64
  6. Step 6: Final answer
    x = 539,333.50

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1.5x scale

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.