Home / 909,579.36-1,255,564.08-715,484.64

Finding the Fourth Proportional to 909,579.36, 1,255,564.08 and 715,484.64

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Solution

The fourth proportional to 909,579.36, 1,255,564.08 and 715,484.64 is: 987,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,579.36 : 1,255,564.08 = 715,484.64 : x
  2. Step 2: Convert to fraction form
    909,579.36/1,255,564.08 = 715,484.64/x
  3. Step 3: Cross multiply
    909,579.36x = 1,255,564.08 × 715,484.64
  4. Step 4: Simplify right side
    909,579.36x = 898,336,813,775.73
  5. Step 5: Solve for x
    x = 898,336,813,775.73/909,579.36
  6. Step 6: Final answer
    x = 987,639.84

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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.