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Finding the Fourth Proportional to 987,648.14, 1,363,065.03 and 557,955.93

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Solution

The fourth proportional to 987,648.14, 1,363,065.03 and 557,955.93 is: 770,041.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,648.14 : 1,363,065.03 = 557,955.93 : x
  2. Step 2: Convert to fraction form
    987,648.14/1,363,065.03 = 557,955.93/x
  3. Step 3: Cross multiply
    987,648.14x = 1,363,065.03 × 557,955.93
  4. Step 4: Simplify right side
    987,648.14x = 760,530,216,464.13
  5. Step 5: Solve for x
    x = 760,530,216,464.13/987,648.14
  6. Step 6: Final answer
    x = 770,041.67

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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.