Home / 579,731.04-869,900.58-421,117.38

Finding the Fourth Proportional to 579,731.04, 869,900.58 and 421,117.38

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Solution

The fourth proportional to 579,731.04, 869,900.58 and 421,117.38 is: 631,896.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,731.04 : 869,900.58 = 421,117.38 : x
  2. Step 2: Convert to fraction form
    579,731.04/869,900.58 = 421,117.38/x
  3. Step 3: Cross multiply
    579,731.04x = 869,900.58 × 421,117.38
  4. Step 4: Simplify right side
    579,731.04x = 366,330,253,110.08
  5. Step 5: Solve for x
    x = 366,330,253,110.08/579,731.04
  6. Step 6: Final answer
    x = 631,896.91

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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.