Home / 7,158,160-9,878,260.80-3,938,896

Finding the Fourth Proportional to 7,158,160, 9,878,260.80 and 3,938,896

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Solution

The fourth proportional to 7,158,160, 9,878,260.80 and 3,938,896 is: 5,435,676.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158,160 : 9,878,260.80 = 3,938,896 : x
  2. Step 2: Convert to fraction form
    7,158,160/9,878,260.80 = 3,938,896/x
  3. Step 3: Cross multiply
    7,158,160x = 9,878,260.80 × 3,938,896
  4. Step 4: Simplify right side
    7,158,160x = 38,909,441,952,076.80
  5. Step 5: Solve for x
    x = 38,909,441,952,076.80/7,158,160
  6. Step 6: Final answer
    x = 5,435,676.48

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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.