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Finding the Fourth Proportional to 675,303.30, 931,998.94 and 388,879.20

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Solution

The fourth proportional to 675,303.30, 931,998.94 and 388,879.20 is: 536,699.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,303.30 : 931,998.94 = 388,879.20 : x
  2. Step 2: Convert to fraction form
    675,303.30/931,998.94 = 388,879.20/x
  3. Step 3: Cross multiply
    675,303.30x = 931,998.94 × 388,879.20
  4. Step 4: Simplify right side
    675,303.30x = 362,435,001,215.85
  5. Step 5: Solve for x
    x = 362,435,001,215.85/675,303.30
  6. Step 6: Final answer
    x = 536,699.59

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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.