Home / 1,210,643.25-1,670,763.53-666,778.92

Finding the Fourth Proportional to 1,210,643.25, 1,670,763.53 and 666,778.92

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Solution

The fourth proportional to 1,210,643.25, 1,670,763.53 and 666,778.92 is: 920,196.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,643.25 : 1,670,763.53 = 666,778.92 : x
  2. Step 2: Convert to fraction form
    1,210,643.25/1,670,763.53 = 666,778.92/x
  3. Step 3: Cross multiply
    1,210,643.25x = 1,670,763.53 × 666,778.92
  4. Step 4: Simplify right side
    1,210,643.25x = 1,114,029,902,108.79
  5. Step 5: Solve for x
    x = 1,114,029,902,108.79/1,210,643.25
  6. Step 6: Final answer
    x = 920,196.68

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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.