Home / 1,186,154.70-1,636,894.35-642,294.78

Finding the Fourth Proportional to 1,186,154.70, 1,636,894.35 and 642,294.78

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Solution

The fourth proportional to 1,186,154.70, 1,636,894.35 and 642,294.78 is: 886,367.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,154.70 : 1,636,894.35 = 642,294.78 : x
  2. Step 2: Convert to fraction form
    1,186,154.70/1,636,894.35 = 642,294.78/x
  3. Step 3: Cross multiply
    1,186,154.70x = 1,636,894.35 × 642,294.78
  4. Step 4: Simplify right side
    1,186,154.70x = 1,051,368,696,416.49
  5. Step 5: Solve for x
    x = 1,051,368,696,416.49/1,186,154.70
  6. Step 6: Final answer
    x = 886,367.26

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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.