Home / 739,965.86-1,021,152.86-400,434.12

Finding the Fourth Proportional to 739,965.86, 1,021,152.86 and 400,434.12

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Solution

The fourth proportional to 739,965.86, 1,021,152.86 and 400,434.12 is: 552,599.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,965.86 : 1,021,152.86 = 400,434.12 : x
  2. Step 2: Convert to fraction form
    739,965.86/1,021,152.86 = 400,434.12/x
  3. Step 3: Cross multiply
    739,965.86x = 1,021,152.86 × 400,434.12
  4. Step 4: Simplify right side
    739,965.86x = 408,904,446,879.58
  5. Step 5: Solve for x
    x = 408,904,446,879.58/739,965.86
  6. Step 6: Final answer
    x = 552,599.07

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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.