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Finding the Fourth Proportional to 616,420.88, 850,601.12 and 386,904.80

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Solution

The fourth proportional to 616,420.88, 850,601.12 and 386,904.80 is: 533,891.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,420.88 : 850,601.12 = 386,904.80 : x
  2. Step 2: Convert to fraction form
    616,420.88/850,601.12 = 386,904.80/x
  3. Step 3: Cross multiply
    616,420.88x = 850,601.12 × 386,904.80
  4. Step 4: Simplify right side
    616,420.88x = 329,101,652,927.63
  5. Step 5: Solve for x
    x = 329,101,652,927.63/616,420.88
  6. Step 6: Final answer
    x = 533,891.16

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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.