Home / 916,660.32-1,265,004.72-508,788.36

Finding the Fourth Proportional to 916,660.32, 1,265,004.72 and 508,788.36

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Solution

The fourth proportional to 916,660.32, 1,265,004.72 and 508,788.36 is: 702,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,660.32 : 1,265,004.72 = 508,788.36 : x
  2. Step 2: Convert to fraction form
    916,660.32/1,265,004.72 = 508,788.36/x
  3. Step 3: Cross multiply
    916,660.32x = 1,265,004.72 × 508,788.36
  4. Step 4: Simplify right side
    916,660.32x = 643,619,676,881.06
  5. Step 5: Solve for x
    x = 643,619,676,881.06/916,660.32
  6. Step 6: Final answer
    x = 702,135.42

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1.5x scale

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.