Home / 687,840.94-1,031,061.57-636,927.58

Finding the Fourth Proportional to 687,840.94, 1,031,061.57 and 636,927.58

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Solution

The fourth proportional to 687,840.94, 1,031,061.57 and 636,927.58 is: 954,743.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,840.94 : 1,031,061.57 = 636,927.58 : x
  2. Step 2: Convert to fraction form
    687,840.94/1,031,061.57 = 636,927.58/x
  3. Step 3: Cross multiply
    687,840.94x = 1,031,061.57 × 636,927.58
  4. Step 4: Simplify right side
    687,840.94x = 656,711,550,611.10
  5. Step 5: Solve for x
    x = 656,711,550,611.10/687,840.94
  6. Step 6: Final answer
    x = 954,743.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.