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Finding the Fourth Proportional to 563,054.87, 777,025.80 and 308,389.65

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Solution

The fourth proportional to 563,054.87, 777,025.80 and 308,389.65 is: 425,583.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,054.87 : 777,025.80 = 308,389.65 : x
  2. Step 2: Convert to fraction form
    563,054.87/777,025.80 = 308,389.65/x
  3. Step 3: Cross multiply
    563,054.87x = 777,025.80 × 308,389.65
  4. Step 4: Simplify right side
    563,054.87x = 239,626,714,502.97
  5. Step 5: Solve for x
    x = 239,626,714,502.97/563,054.87
  6. Step 6: Final answer
    x = 425,583.24

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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.