Home / 1,185,884.55-1,636,521.30-642,020.45

Finding the Fourth Proportional to 1,185,884.55, 1,636,521.30 and 642,020.45

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Solution

The fourth proportional to 1,185,884.55, 1,636,521.30 and 642,020.45 is: 885,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,884.55 : 1,636,521.30 = 642,020.45 : x
  2. Step 2: Convert to fraction form
    1,185,884.55/1,636,521.30 = 642,020.45/x
  3. Step 3: Cross multiply
    1,185,884.55x = 1,636,521.30 × 642,020.45
  4. Step 4: Simplify right side
    1,185,884.55x = 1,050,680,133,277.98
  5. Step 5: Solve for x
    x = 1,050,680,133,277.98/1,185,884.55
  6. Step 6: Final answer
    x = 885,988.55

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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.