Home / 1,288,430.70-1,932,643.98-328,886.22

Finding the Fourth Proportional to 1,288,430.70, 1,932,643.98 and 328,886.22

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Solution

The fourth proportional to 1,288,430.70, 1,932,643.98 and 328,886.22 is: 493,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,430.70 : 1,932,643.98 = 328,886.22 : x
  2. Step 2: Convert to fraction form
    1,288,430.70/1,932,643.98 = 328,886.22/x
  3. Step 3: Cross multiply
    1,288,430.70x = 1,932,643.98 × 328,886.22
  4. Step 4: Simplify right side
    1,288,430.70x = 635,619,973,187.96
  5. Step 5: Solve for x
    x = 635,619,973,187.96/1,288,430.70
  6. Step 6: Final answer
    x = 493,328.80

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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.