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Finding the Fourth Proportional to 553,609.05, 763,980.53 and 298,960.24

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Solution

The fourth proportional to 553,609.05, 763,980.53 and 298,960.24 is: 412,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,609.05 : 763,980.53 = 298,960.24 : x
  2. Step 2: Convert to fraction form
    553,609.05/763,980.53 = 298,960.24/x
  3. Step 3: Cross multiply
    553,609.05x = 763,980.53 × 298,960.24
  4. Step 4: Simplify right side
    553,609.05x = 228,399,805,303.01
  5. Step 5: Solve for x
    x = 228,399,805,303.01/553,609.05
  6. Step 6: Final answer
    x = 412,565.15

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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.