Home / 1,388,158.66-1,915,756.58-776,368.35

Finding the Fourth Proportional to 1,388,158.66, 1,915,756.58 and 776,368.35

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Solution

The fourth proportional to 1,388,158.66, 1,915,756.58 and 776,368.35 is: 1,071,442.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,158.66 : 1,915,756.58 = 776,368.35 : x
  2. Step 2: Convert to fraction form
    1,388,158.66/1,915,756.58 = 776,368.35/x
  3. Step 3: Cross multiply
    1,388,158.66x = 1,915,756.58 × 776,368.35
  4. Step 4: Simplify right side
    1,388,158.66x = 1,487,332,776,687.88
  5. Step 5: Solve for x
    x = 1,487,332,776,687.88/1,388,158.66
  6. Step 6: Final answer
    x = 1,071,442.92

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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.