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Finding the Fourth Proportional to 570,625.95, 787,487.55 and 315,977.13

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Solution

The fourth proportional to 570,625.95, 787,487.55 and 315,977.13 is: 436,061.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,625.95 : 787,487.55 = 315,977.13 : x
  2. Step 2: Convert to fraction form
    570,625.95/787,487.55 = 315,977.13/x
  3. Step 3: Cross multiply
    570,625.95x = 787,487.55 × 315,977.13
  4. Step 4: Simplify right side
    570,625.95x = 248,828,055,959.73
  5. Step 5: Solve for x
    x = 248,828,055,959.73/570,625.95
  6. Step 6: Final answer
    x = 436,061.58

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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.