Home / 912,400.60-1,368,600.90-406,960.60

Finding the Fourth Proportional to 912,400.60, 1,368,600.90 and 406,960.60

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Solution

The fourth proportional to 912,400.60, 1,368,600.90 and 406,960.60 is: 610,440.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,400.60 : 1,368,600.90 = 406,960.60 : x
  2. Step 2: Convert to fraction form
    912,400.60/1,368,600.90 = 406,960.60/x
  3. Step 3: Cross multiply
    912,400.60x = 1,368,600.90 × 406,960.60
  4. Step 4: Simplify right side
    912,400.60x = 556,966,643,424.54
  5. Step 5: Solve for x
    x = 556,966,643,424.54/912,400.60
  6. Step 6: Final answer
    x = 610,440.90

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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.