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Finding the Fourth Proportional to 711,571.77, 981,384.46 and 507,557.48

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Solution

The fourth proportional to 711,571.77, 981,384.46 and 507,557.48 is: 700,012.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,571.77 : 981,384.46 = 507,557.48 : x
  2. Step 2: Convert to fraction form
    711,571.77/981,384.46 = 507,557.48/x
  3. Step 3: Cross multiply
    711,571.77x = 981,384.46 × 507,557.48
  4. Step 4: Simplify right side
    711,571.77x = 498,109,017,252.95
  5. Step 5: Solve for x
    x = 498,109,017,252.95/711,571.77
  6. Step 6: Final answer
    x = 700,012.34

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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.