Home / 1,185,775.87-1,636,368.81-641,911.52

Finding the Fourth Proportional to 1,185,775.87, 1,636,368.81 and 641,911.52

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Solution

The fourth proportional to 1,185,775.87, 1,636,368.81 and 641,911.52 is: 885,836.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,775.87 : 1,636,368.81 = 641,911.52 : x
  2. Step 2: Convert to fraction form
    1,185,775.87/1,636,368.81 = 641,911.52/x
  3. Step 3: Cross multiply
    1,185,775.87x = 1,636,368.81 × 641,911.52
  4. Step 4: Simplify right side
    1,185,775.87x = 1,050,403,981,925.85
  5. Step 5: Solve for x
    x = 1,050,403,981,925.85/1,185,775.87
  6. Step 6: Final answer
    x = 885,836.87

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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.