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Finding the Fourth Proportional to 563,340.84, 777,384.99 and 308,686.56

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Solution

The fourth proportional to 563,340.84, 777,384.99 and 308,686.56 is: 425,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,340.84 : 777,384.99 = 308,686.56 : x
  2. Step 2: Convert to fraction form
    563,340.84/777,384.99 = 308,686.56/x
  3. Step 3: Cross multiply
    563,340.84x = 777,384.99 × 308,686.56
  4. Step 4: Simplify right side
    563,340.84x = 239,968,298,358.73
  5. Step 5: Solve for x
    x = 239,968,298,358.73/563,340.84
  6. Step 6: Final answer
    x = 425,973.55

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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.