Home / 1,223,911.58-1,688,454.56-815,615.68

Finding the Fourth Proportional to 1,223,911.58, 1,688,454.56 and 815,615.68

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Solution

The fourth proportional to 1,223,911.58, 1,688,454.56 and 815,615.68 is: 1,125,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,911.58 : 1,688,454.56 = 815,615.68 : x
  2. Step 2: Convert to fraction form
    1,223,911.58/1,688,454.56 = 815,615.68/x
  3. Step 3: Cross multiply
    1,223,911.58x = 1,688,454.56 × 815,615.68
  4. Step 4: Simplify right side
    1,223,911.58x = 1,377,130,014,103.50
  5. Step 5: Solve for x
    x = 1,377,130,014,103.50/1,223,911.58
  6. Step 6: Final answer
    x = 1,125,187.50

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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.