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Finding the Fourth Proportional to 615,475.70, 849,498.20 and 360,908.90

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Solution

The fourth proportional to 615,475.70, 849,498.20 and 360,908.90 is: 498,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,475.70 : 849,498.20 = 360,908.90 : x
  2. Step 2: Convert to fraction form
    615,475.70/849,498.20 = 360,908.90/x
  3. Step 3: Cross multiply
    615,475.70x = 849,498.20 × 360,908.90
  4. Step 4: Simplify right side
    615,475.70x = 306,591,460,913.98
  5. Step 5: Solve for x
    x = 306,591,460,913.98/615,475.70
  6. Step 6: Final answer
    x = 498,137.39

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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.