Home / 1,240,419.80-1,860,629.70-442,602.20

Finding the Fourth Proportional to 1,240,419.80, 1,860,629.70 and 442,602.20

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Solution

The fourth proportional to 1,240,419.80, 1,860,629.70 and 442,602.20 is: 663,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,419.80 : 1,860,629.70 = 442,602.20 : x
  2. Step 2: Convert to fraction form
    1,240,419.80/1,860,629.70 = 442,602.20/x
  3. Step 3: Cross multiply
    1,240,419.80x = 1,860,629.70 × 442,602.20
  4. Step 4: Simplify right side
    1,240,419.80x = 823,518,798,605.34
  5. Step 5: Solve for x
    x = 823,518,798,605.34/1,240,419.80
  6. Step 6: Final answer
    x = 663,903.30

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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.