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Finding the Fourth Proportional to 1,185,564, 1,636,078.32 and 649,020

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Solution

The fourth proportional to 1,185,564, 1,636,078.32 and 649,020 is: 895,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,564 : 1,636,078.32 = 649,020 : x
  2. Step 2: Convert to fraction form
    1,185,564/1,636,078.32 = 649,020/x
  3. Step 3: Cross multiply
    1,185,564x = 1,636,078.32 × 649,020
  4. Step 4: Simplify right side
    1,185,564x = 1,061,847,551,246.40
  5. Step 5: Solve for x
    x = 1,061,847,551,246.40/1,185,564
  6. Step 6: Final answer
    x = 895,647.60

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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.