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Finding the Fourth Proportional to 570,591.63, 787,406.82 and 315,937.35

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Solution

The fourth proportional to 570,591.63, 787,406.82 and 315,937.35 is: 435,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,591.63 : 787,406.82 = 315,937.35 : x
  2. Step 2: Convert to fraction form
    570,591.63/787,406.82 = 315,937.35/x
  3. Step 3: Cross multiply
    570,591.63x = 787,406.82 × 315,937.35
  4. Step 4: Simplify right side
    570,591.63x = 248,771,224,082.73
  5. Step 5: Solve for x
    x = 248,771,224,082.73/570,591.63
  6. Step 6: Final answer
    x = 435,988.21

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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.