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Finding the Fourth Proportional to 562,961.40, 776,857.94 and 308,263.40

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Solution

The fourth proportional to 562,961.40, 776,857.94 and 308,263.40 is: 425,387.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,961.40 : 776,857.94 = 308,263.40 : x
  2. Step 2: Convert to fraction form
    562,961.40/776,857.94 = 308,263.40/x
  3. Step 3: Cross multiply
    562,961.40x = 776,857.94 × 308,263.40
  4. Step 4: Simplify right side
    562,961.40x = 239,476,869,901.40
  5. Step 5: Solve for x
    x = 239,476,869,901.40/562,961.40
  6. Step 6: Final answer
    x = 425,387.73

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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.