Home / 677,428.69-1,016,313.90-478,138.32

Finding the Fourth Proportional to 677,428.69, 1,016,313.90 and 478,138.32

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Solution

The fourth proportional to 677,428.69, 1,016,313.90 and 478,138.32 is: 717,328.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,428.69 : 1,016,313.90 = 478,138.32 : x
  2. Step 2: Convert to fraction form
    677,428.69/1,016,313.90 = 478,138.32/x
  3. Step 3: Cross multiply
    677,428.69x = 1,016,313.90 × 478,138.32
  4. Step 4: Simplify right side
    677,428.69x = 485,938,620,738.65
  5. Step 5: Solve for x
    x = 485,938,620,738.65/677,428.69
  6. Step 6: Final answer
    x = 717,328.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.