Home / 1,186,042.23-1,636,739.01-642,178.40

Finding the Fourth Proportional to 1,186,042.23, 1,636,739.01 and 642,178.40

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Solution

The fourth proportional to 1,186,042.23, 1,636,739.01 and 642,178.40 is: 886,206.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,042.23 : 1,636,739.01 = 642,178.40 : x
  2. Step 2: Convert to fraction form
    1,186,042.23/1,636,739.01 = 642,178.40/x
  3. Step 3: Cross multiply
    1,186,042.23x = 1,636,739.01 × 642,178.40
  4. Step 4: Simplify right side
    1,186,042.23x = 1,051,078,430,475.69
  5. Step 5: Solve for x
    x = 1,051,078,430,475.69/1,186,042.23
  6. Step 6: Final answer
    x = 886,206.58

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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.