Home / 687,384.90-948,548.16-415,291.95

Finding the Fourth Proportional to 687,384.90, 948,548.16 and 415,291.95

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Solution

The fourth proportional to 687,384.90, 948,548.16 and 415,291.95 is: 573,076.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,384.90 : 948,548.16 = 415,291.95 : x
  2. Step 2: Convert to fraction form
    687,384.90/948,548.16 = 415,291.95/x
  3. Step 3: Cross multiply
    687,384.90x = 948,548.16 × 415,291.95
  4. Step 4: Simplify right side
    687,384.90x = 393,924,415,035.31
  5. Step 5: Solve for x
    x = 393,924,415,035.31/687,384.90
  6. Step 6: Final answer
    x = 573,076.91

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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.