Home / 1,185,988.08-1,636,643.59-642,119.47

Finding the Fourth Proportional to 1,185,988.08, 1,636,643.59 and 642,119.47

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Solution

The fourth proportional to 1,185,988.08, 1,636,643.59 and 642,119.47 is: 886,114.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,988.08 : 1,636,643.59 = 642,119.47 : x
  2. Step 2: Convert to fraction form
    1,185,988.08/1,636,643.59 = 642,119.47/x
  3. Step 3: Cross multiply
    1,185,988.08x = 1,636,643.59 × 642,119.47
  4. Step 4: Simplify right side
    1,185,988.08x = 1,050,920,714,589.70
  5. Step 5: Solve for x
    x = 1,050,920,714,589.70/1,185,988.08
  6. Step 6: Final answer
    x = 886,114.06

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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.