Home / 1,185,943.87-1,636,600.21-642,079.59

Finding the Fourth Proportional to 1,185,943.87, 1,636,600.21 and 642,079.59

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Solution

The fourth proportional to 1,185,943.87, 1,636,600.21 and 642,079.59 is: 886,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,943.87 : 1,636,600.21 = 642,079.59 : x
  2. Step 2: Convert to fraction form
    1,185,943.87/1,636,600.21 = 642,079.59/x
  3. Step 3: Cross multiply
    1,185,943.87x = 1,636,600.21 × 642,079.59
  4. Step 4: Simplify right side
    1,185,943.87x = 1,050,827,591,830.71
  5. Step 5: Solve for x
    x = 1,050,827,591,830.71/1,185,943.87
  6. Step 6: Final answer
    x = 886,068.57

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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.