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Finding the Fourth Proportional to 520,395.74, 718,136.76 and 294,036.38

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Solution

The fourth proportional to 520,395.74, 718,136.76 and 294,036.38 is: 405,764.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,395.74 : 718,136.76 = 294,036.38 : x
  2. Step 2: Convert to fraction form
    520,395.74/718,136.76 = 294,036.38/x
  3. Step 3: Cross multiply
    520,395.74x = 718,136.76 × 294,036.38
  4. Step 4: Simplify right side
    520,395.74x = 211,158,333,255.33
  5. Step 5: Solve for x
    x = 211,158,333,255.33/520,395.74
  6. Step 6: Final answer
    x = 405,764.92

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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.