Home / 1,020,790.47-1,531,185.77-421,767.07

Finding the Fourth Proportional to 1,020,790.47, 1,531,185.77 and 421,767.07

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Solution

The fourth proportional to 1,020,790.47, 1,531,185.77 and 421,767.07 is: 632,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,790.47 : 1,531,185.77 = 421,767.07 : x
  2. Step 2: Convert to fraction form
    1,020,790.47/1,531,185.77 = 421,767.07/x
  3. Step 3: Cross multiply
    1,020,790.47x = 1,531,185.77 × 421,767.07
  4. Step 4: Simplify right side
    1,020,790.47x = 645,803,733,065.05
  5. Step 5: Solve for x
    x = 645,803,733,065.05/1,020,790.47
  6. Step 6: Final answer
    x = 632,650.63

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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.