Home / 1,631,645.40-2,447,468.10-1,390,200.60

Finding the Fourth Proportional to 1,631,645.40, 2,447,468.10 and 1,390,200.60

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Solution

The fourth proportional to 1,631,645.40, 2,447,468.10 and 1,390,200.60 is: 2,085,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631,645.40 : 2,447,468.10 = 1,390,200.60 : x
  2. Step 2: Convert to fraction form
    1,631,645.40/2,447,468.10 = 1,390,200.60/x
  3. Step 3: Cross multiply
    1,631,645.40x = 2,447,468.10 × 1,390,200.60
  4. Step 4: Simplify right side
    1,631,645.40x = 3,402,471,621,100.86
  5. Step 5: Solve for x
    x = 3,402,471,621,100.86/1,631,645.40
  6. Step 6: Final answer
    x = 2,085,300.90

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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.