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Finding the Fourth Proportional to 615,990.84, 850,019.36 and 357,825.03

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Solution

The fourth proportional to 615,990.84, 850,019.36 and 357,825.03 is: 493,770.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,990.84 : 850,019.36 = 357,825.03 : x
  2. Step 2: Convert to fraction form
    615,990.84/850,019.36 = 357,825.03/x
  3. Step 3: Cross multiply
    615,990.84x = 850,019.36 × 357,825.03
  4. Step 4: Simplify right side
    615,990.84x = 304,158,201,203.46
  5. Step 5: Solve for x
    x = 304,158,201,203.46/615,990.84
  6. Step 6: Final answer
    x = 493,770.66

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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.