Home / 1,240,284.80-1,860,427.20-398,921.60

Finding the Fourth Proportional to 1,240,284.80, 1,860,427.20 and 398,921.60

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Solution

The fourth proportional to 1,240,284.80, 1,860,427.20 and 398,921.60 is: 598,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,284.80 : 1,860,427.20 = 398,921.60 : x
  2. Step 2: Convert to fraction form
    1,240,284.80/1,860,427.20 = 398,921.60/x
  3. Step 3: Cross multiply
    1,240,284.80x = 1,860,427.20 × 398,921.60
  4. Step 4: Simplify right side
    1,240,284.80x = 742,164,595,307.52
  5. Step 5: Solve for x
    x = 742,164,595,307.52/1,240,284.80
  6. Step 6: Final answer
    x = 598,382.40

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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.