Home / 1,020,921.74-1,531,383.11-421,223.79

Finding the Fourth Proportional to 1,020,921.74, 1,531,383.11 and 421,223.79

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Solution

The fourth proportional to 1,020,921.74, 1,531,383.11 and 421,223.79 is: 631,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,921.74 : 1,531,383.11 = 421,223.79 : x
  2. Step 2: Convert to fraction form
    1,020,921.74/1,531,383.11 = 421,223.79/x
  3. Step 3: Cross multiply
    1,020,921.74x = 1,531,383.11 × 421,223.79
  4. Step 4: Simplify right side
    1,020,921.74x = 645,054,995,430.07
  5. Step 5: Solve for x
    x = 645,054,995,430.07/1,020,921.74
  6. Step 6: Final answer
    x = 631,835.89

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.