Home / 986,999.80-1,480,499.70-426,034.30

Finding the Fourth Proportional to 986,999.80, 1,480,499.70 and 426,034.30

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Solution

The fourth proportional to 986,999.80, 1,480,499.70 and 426,034.30 is: 639,051.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,999.80 : 1,480,499.70 = 426,034.30 : x
  2. Step 2: Convert to fraction form
    986,999.80/1,480,499.70 = 426,034.30/x
  3. Step 3: Cross multiply
    986,999.80x = 1,480,499.70 × 426,034.30
  4. Step 4: Simplify right side
    986,999.80x = 630,743,653,339.71
  5. Step 5: Solve for x
    x = 630,743,653,339.71/986,999.80
  6. Step 6: Final answer
    x = 639,051.45

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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.