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Finding the Fourth Proportional to 562,810.91, 776,687.60 and 308,185.79

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Solution

The fourth proportional to 562,810.91, 776,687.60 and 308,185.79 is: 425,301.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,810.91 : 776,687.60 = 308,185.79 : x
  2. Step 2: Convert to fraction form
    562,810.91/776,687.60 = 308,185.79/x
  3. Step 3: Cross multiply
    562,810.91x = 776,687.60 × 308,185.79
  4. Step 4: Simplify right side
    562,810.91x = 239,364,078,476.23
  5. Step 5: Solve for x
    x = 239,364,078,476.23/562,810.91
  6. Step 6: Final answer
    x = 425,301.07

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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.