Home / 1,186,055.85-1,636,750.17-642,180.40

Finding the Fourth Proportional to 1,186,055.85, 1,636,750.17 and 642,180.40

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Solution

The fourth proportional to 1,186,055.85, 1,636,750.17 and 642,180.40 is: 886,205.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,055.85 : 1,636,750.17 = 642,180.40 : x
  2. Step 2: Convert to fraction form
    1,186,055.85/1,636,750.17 = 642,180.40/x
  3. Step 3: Cross multiply
    1,186,055.85x = 1,636,750.17 × 642,180.40
  4. Step 4: Simplify right side
    1,186,055.85x = 1,051,088,878,870.67
  5. Step 5: Solve for x
    x = 1,051,088,878,870.67/1,186,055.85
  6. Step 6: Final answer
    x = 886,205.21

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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.