Home / 985,698.32-1,477,911.78-386,720.01

Finding the Fourth Proportional to 985,698.32, 1,477,911.78 and 386,720.01

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Solution

The fourth proportional to 985,698.32, 1,477,911.78 and 386,720.01 is: 579,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,698.32 : 1,477,911.78 = 386,720.01 : x
  2. Step 2: Convert to fraction form
    985,698.32/1,477,911.78 = 386,720.01/x
  3. Step 3: Cross multiply
    985,698.32x = 1,477,911.78 × 386,720.01
  4. Step 4: Simplify right side
    985,698.32x = 571,538,058,340.72
  5. Step 5: Solve for x
    x = 571,538,058,340.72/985,698.32
  6. Step 6: Final answer
    x = 579,830.61

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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.