Home / 1,185,970.40-1,636,639.84-642,106.32

Finding the Fourth Proportional to 1,185,970.40, 1,636,639.84 and 642,106.32

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Solution

The fourth proportional to 1,185,970.40, 1,636,639.84 and 642,106.32 is: 886,107.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,970.40 : 1,636,639.84 = 642,106.32 : x
  2. Step 2: Convert to fraction form
    1,185,970.40/1,636,639.84 = 642,106.32/x
  3. Step 3: Cross multiply
    1,185,970.40x = 1,636,639.84 × 642,106.32
  4. Step 4: Simplify right side
    1,185,970.40x = 1,050,896,784,827.79
  5. Step 5: Solve for x
    x = 1,050,896,784,827.79/1,185,970.40
  6. Step 6: Final answer
    x = 886,107.09

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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.