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Finding the Fourth Proportional to 571,024.62, 788,013.36 and 312,907.86

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Solution

The fourth proportional to 571,024.62, 788,013.36 and 312,907.86 is: 431,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,024.62 : 788,013.36 = 312,907.86 : x
  2. Step 2: Convert to fraction form
    571,024.62/788,013.36 = 312,907.86/x
  3. Step 3: Cross multiply
    571,024.62x = 788,013.36 × 312,907.86
  4. Step 4: Simplify right side
    571,024.62x = 246,575,574,129.01
  5. Step 5: Solve for x
    x = 246,575,574,129.01/571,024.62
  6. Step 6: Final answer
    x = 431,812.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.