Home / 1,258,421.40-1,736,647.92-685,460.16

Finding the Fourth Proportional to 1,258,421.40, 1,736,647.92 and 685,460.16

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Solution

The fourth proportional to 1,258,421.40, 1,736,647.92 and 685,460.16 is: 945,949.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,421.40 : 1,736,647.92 = 685,460.16 : x
  2. Step 2: Convert to fraction form
    1,258,421.40/1,736,647.92 = 685,460.16/x
  3. Step 3: Cross multiply
    1,258,421.40x = 1,736,647.92 × 685,460.16
  4. Step 4: Simplify right side
    1,258,421.40x = 1,190,402,961,106.87
  5. Step 5: Solve for x
    x = 1,190,402,961,106.87/1,258,421.40
  6. Step 6: Final answer
    x = 945,949.39

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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.