Home / 1,185,965.43-1,636,612.45-642,096.80

Finding the Fourth Proportional to 1,185,965.43, 1,636,612.45 and 642,096.80

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Solution

The fourth proportional to 1,185,965.43, 1,636,612.45 and 642,096.80 is: 886,082.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,965.43 : 1,636,612.45 = 642,096.80 : x
  2. Step 2: Convert to fraction form
    1,185,965.43/1,636,612.45 = 642,096.80/x
  3. Step 3: Cross multiply
    1,185,965.43x = 1,636,612.45 × 642,096.80
  4. Step 4: Simplify right side
    1,185,965.43x = 1,050,863,616,985.16
  5. Step 5: Solve for x
    x = 1,050,863,616,985.16/1,185,965.43
  6. Step 6: Final answer
    x = 886,082.84

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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.