Home / 1,185,975.60-1,636,647.29-642,111.76

Finding the Fourth Proportional to 1,185,975.60, 1,636,647.29 and 642,111.76

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Solution

The fourth proportional to 1,185,975.60, 1,636,647.29 and 642,111.76 is: 886,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,975.60 : 1,636,647.29 = 642,111.76 : x
  2. Step 2: Convert to fraction form
    1,185,975.60/1,636,647.29 = 642,111.76/x
  3. Step 3: Cross multiply
    1,185,975.60x = 1,636,647.29 × 642,111.76
  4. Step 4: Simplify right side
    1,185,975.60x = 1,050,910,471,881.13
  5. Step 5: Solve for x
    x = 1,050,910,471,881.13/1,185,975.60
  6. Step 6: Final answer
    x = 886,114.75

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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.