Home / 1,185,798.90-1,636,403-641,934.68

Finding the Fourth Proportional to 1,185,798.90, 1,636,403 and 641,934.68

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Solution

The fourth proportional to 1,185,798.90, 1,636,403 and 641,934.68 is: 885,870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,798.90 : 1,636,403 = 641,934.68 : x
  2. Step 2: Convert to fraction form
    1,185,798.90/1,636,403 = 641,934.68/x
  3. Step 3: Cross multiply
    1,185,798.90x = 1,636,403 × 641,934.68
  4. Step 4: Simplify right side
    1,185,798.90x = 1,050,463,836,156.04
  5. Step 5: Solve for x
    x = 1,050,463,836,156.04/1,185,798.90
  6. Step 6: Final answer
    x = 885,870.14

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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.