Home / 531,890.40-734,007.60-290,173.12

Finding the Fourth Proportional to 531,890.40, 734,007.60 and 290,173.12

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Solution

The fourth proportional to 531,890.40, 734,007.60 and 290,173.12 is: 400,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,890.40 : 734,007.60 = 290,173.12 : x
  2. Step 2: Convert to fraction form
    531,890.40/734,007.60 = 290,173.12/x
  3. Step 3: Cross multiply
    531,890.40x = 734,007.60 × 290,173.12
  4. Step 4: Simplify right side
    531,890.40x = 212,989,275,395.71
  5. Step 5: Solve for x
    x = 212,989,275,395.71/531,890.40
  6. Step 6: Final answer
    x = 400,438.28

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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.