Home / 1,209,216.80-1,813,825.20-310,656.80

Finding the Fourth Proportional to 1,209,216.80, 1,813,825.20 and 310,656.80

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Solution

The fourth proportional to 1,209,216.80, 1,813,825.20 and 310,656.80 is: 465,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,216.80 : 1,813,825.20 = 310,656.80 : x
  2. Step 2: Convert to fraction form
    1,209,216.80/1,813,825.20 = 310,656.80/x
  3. Step 3: Cross multiply
    1,209,216.80x = 1,813,825.20 × 310,656.80
  4. Step 4: Simplify right side
    1,209,216.80x = 563,477,132,391.36
  5. Step 5: Solve for x
    x = 563,477,132,391.36/1,209,216.80
  6. Step 6: Final answer
    x = 465,985.20

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1.5x scale

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.