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Finding the Fourth Proportional to 572,994.45, 862,821 and 424,288.17

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Solution

The fourth proportional to 572,994.45, 862,821 and 424,288.17 is: 638,897.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,994.45 : 862,821 = 424,288.17 : x
  2. Step 2: Convert to fraction form
    572,994.45/862,821 = 424,288.17/x
  3. Step 3: Cross multiply
    572,994.45x = 862,821 × 424,288.17
  4. Step 4: Simplify right side
    572,994.45x = 366,084,743,127.57
  5. Step 5: Solve for x
    x = 366,084,743,127.57/572,994.45
  6. Step 6: Final answer
    x = 638,897.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.