Home / 911,220.72-1,258,075.80-815,561.52

Finding the Fourth Proportional to 911,220.72, 1,258,075.80 and 815,561.52

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Solution

The fourth proportional to 911,220.72, 1,258,075.80 and 815,561.52 is: 1,126,004.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,220.72 : 1,258,075.80 = 815,561.52 : x
  2. Step 2: Convert to fraction form
    911,220.72/1,258,075.80 = 815,561.52/x
  3. Step 3: Cross multiply
    911,220.72x = 1,258,075.80 × 815,561.52
  4. Step 4: Simplify right side
    911,220.72x = 1,026,038,211,723.22
  5. Step 5: Solve for x
    x = 1,026,038,211,723.22/911,220.72
  6. Step 6: Final answer
    x = 1,126,004.04

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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.