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Finding the Fourth Proportional to 563,339.34, 777,382.92 and 308,685.06

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Solution

The fourth proportional to 563,339.34, 777,382.92 and 308,685.06 is: 425,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,339.34 : 777,382.92 = 308,685.06 : x
  2. Step 2: Convert to fraction form
    563,339.34/777,382.92 = 308,685.06/x
  3. Step 3: Cross multiply
    563,339.34x = 777,382.92 × 308,685.06
  4. Step 4: Simplify right side
    563,339.34x = 239,966,493,303.18
  5. Step 5: Solve for x
    x = 239,966,493,303.18/563,339.34
  6. Step 6: Final answer
    x = 425,971.48

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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.