Home / 371,028,756.40-556,543,134.60-128,691,660.40

Finding the Fourth Proportional to 371,028,756.40, 556,543,134.60 and 128,691,660.40

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Solution

The fourth proportional to 371,028,756.40, 556,543,134.60 and 128,691,660.40 is: 193,037,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,028,756.40 : 556,543,134.60 = 128,691,660.40 : x
  2. Step 2: Convert to fraction form
    371,028,756.40/556,543,134.60 = 128,691,660.40/x
  3. Step 3: Cross multiply
    371,028,756.40x = 556,543,134.60 × 128,691,660.40
  4. Step 4: Simplify right side
    371,028,756.40x = 71,622,460,075,894,696
  5. Step 5: Solve for x
    x = 71,622,460,075,894,696/371,028,756.40
  6. Step 6: Final answer
    x = 193,037,490.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.