Home / 721,890.07-1,083,899.60-402,665.65

Finding the Fourth Proportional to 721,890.07, 1,083,899.60 and 402,665.65

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Solution

The fourth proportional to 721,890.07, 1,083,899.60 and 402,665.65 is: 604,592.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,890.07 : 1,083,899.60 = 402,665.65 : x
  2. Step 2: Convert to fraction form
    721,890.07/1,083,899.60 = 402,665.65/x
  3. Step 3: Cross multiply
    721,890.07x = 1,083,899.60 × 402,665.65
  4. Step 4: Simplify right side
    721,890.07x = 436,449,136,968.74
  5. Step 5: Solve for x
    x = 436,449,136,968.74/721,890.07
  6. Step 6: Final answer
    x = 604,592.24

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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.