Home / 420,566.16-630,846-105,020.94

Finding the Fourth Proportional to 420,566.16, 630,846 and 105,020.94

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Solution

The fourth proportional to 420,566.16, 630,846 and 105,020.94 is: 157,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,566.16 : 630,846 = 105,020.94 : x
  2. Step 2: Convert to fraction form
    420,566.16/630,846 = 105,020.94/x
  3. Step 3: Cross multiply
    420,566.16x = 630,846 × 105,020.94
  4. Step 4: Simplify right side
    420,566.16x = 66,252,039,915.24
  5. Step 5: Solve for x
    x = 66,252,039,915.24/420,566.16
  6. Step 6: Final answer
    x = 157,530.60

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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.