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Finding the Fourth Proportional to 615,659.40, 849,545.22 and 357,485.88

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Solution

The fourth proportional to 615,659.40, 849,545.22 and 357,485.88 is: 493,292.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,659.40 : 849,545.22 = 357,485.88 : x
  2. Step 2: Convert to fraction form
    615,659.40/849,545.22 = 357,485.88/x
  3. Step 3: Cross multiply
    615,659.40x = 849,545.22 × 357,485.88
  4. Step 4: Simplify right side
    615,659.40x = 303,700,420,571.49
  5. Step 5: Solve for x
    x = 303,700,420,571.49/615,659.40
  6. Step 6: Final answer
    x = 493,292.92

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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.