Home / 865,705.86-1,298,698.36-266,666.45

Finding the Fourth Proportional to 865,705.86, 1,298,698.36 and 266,666.45

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Solution

The fourth proportional to 865,705.86, 1,298,698.36 and 266,666.45 is: 400,042.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,705.86 : 1,298,698.36 = 266,666.45 : x
  2. Step 2: Convert to fraction form
    865,705.86/1,298,698.36 = 266,666.45/x
  3. Step 3: Cross multiply
    865,705.86x = 1,298,698.36 × 266,666.45
  4. Step 4: Simplify right side
    865,705.86x = 346,319,274,121.86
  5. Step 5: Solve for x
    x = 346,319,274,121.86/865,705.86
  6. Step 6: Final answer
    x = 400,042.66

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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.