Home / 912,145.20-1,368,217.80-770,427.60

Finding the Fourth Proportional to 912,145.20, 1,368,217.80 and 770,427.60

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Solution

The fourth proportional to 912,145.20, 1,368,217.80 and 770,427.60 is: 1,155,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,145.20 : 1,368,217.80 = 770,427.60 : x
  2. Step 2: Convert to fraction form
    912,145.20/1,368,217.80 = 770,427.60/x
  3. Step 3: Cross multiply
    912,145.20x = 1,368,217.80 × 770,427.60
  4. Step 4: Simplify right side
    912,145.20x = 1,054,112,755,931.28
  5. Step 5: Solve for x
    x = 1,054,112,755,931.28/912,145.20
  6. Step 6: Final answer
    x = 1,155,641.40

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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.