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Finding the Fourth Proportional to 571,293.78, 787,976.01 and 377,476.98

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Solution

The fourth proportional to 571,293.78, 787,976.01 and 377,476.98 is: 520,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,293.78 : 787,976.01 = 377,476.98 : x
  2. Step 2: Convert to fraction form
    571,293.78/787,976.01 = 377,476.98/x
  3. Step 3: Cross multiply
    571,293.78x = 787,976.01 × 377,476.98
  4. Step 4: Simplify right side
    571,293.78x = 297,442,804,567.25
  5. Step 5: Solve for x
    x = 297,442,804,567.25/571,293.78
  6. Step 6: Final answer
    x = 520,647.72

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1.5x scale

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.