Home / 719,100.16-992,313.60-396,812.80

Finding the Fourth Proportional to 719,100.16, 992,313.60 and 396,812.80

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Solution

The fourth proportional to 719,100.16, 992,313.60 and 396,812.80 is: 547,577.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,100.16 : 992,313.60 = 396,812.80 : x
  2. Step 2: Convert to fraction form
    719,100.16/992,313.60 = 396,812.80/x
  3. Step 3: Cross multiply
    719,100.16x = 992,313.60 × 396,812.80
  4. Step 4: Simplify right side
    719,100.16x = 393,762,738,094.08
  5. Step 5: Solve for x
    x = 393,762,738,094.08/719,100.16
  6. Step 6: Final answer
    x = 547,577.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.