Home / 920,670.96-1,270,565.52-512,772.98

Finding the Fourth Proportional to 920,670.96, 1,270,565.52 and 512,772.98

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Solution

The fourth proportional to 920,670.96, 1,270,565.52 and 512,772.98 is: 707,648.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,670.96 : 1,270,565.52 = 512,772.98 : x
  2. Step 2: Convert to fraction form
    920,670.96/1,270,565.52 = 512,772.98/x
  3. Step 3: Cross multiply
    920,670.96x = 1,270,565.52 × 512,772.98
  4. Step 4: Simplify right side
    920,670.96x = 651,511,668,289.03
  5. Step 5: Solve for x
    x = 651,511,668,289.03/920,670.96
  6. Step 6: Final answer
    x = 707,648.77

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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.