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Finding the Fourth Proportional to 612,004.83, 918,162.99 and 359,498.85

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Solution

The fourth proportional to 612,004.83, 918,162.99 and 359,498.85 is: 539,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,004.83 : 918,162.99 = 359,498.85 : x
  2. Step 2: Convert to fraction form
    612,004.83/918,162.99 = 359,498.85/x
  3. Step 3: Cross multiply
    612,004.83x = 918,162.99 × 359,498.85
  4. Step 4: Simplify right side
    612,004.83x = 330,078,539,017.56
  5. Step 5: Solve for x
    x = 330,078,539,017.56/612,004.83
  6. Step 6: Final answer
    x = 539,339.76

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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.