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Finding the Fourth Proportional to 483,057.40, 724,715.70 and 430,828.60

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Solution

The fourth proportional to 483,057.40, 724,715.70 and 430,828.60 is: 646,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,057.40 : 724,715.70 = 430,828.60 : x
  2. Step 2: Convert to fraction form
    483,057.40/724,715.70 = 430,828.60/x
  3. Step 3: Cross multiply
    483,057.40x = 724,715.70 × 430,828.60
  4. Step 4: Simplify right side
    483,057.40x = 312,228,250,429.02
  5. Step 5: Solve for x
    x = 312,228,250,429.02/483,057.40
  6. Step 6: Final answer
    x = 646,358.49

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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.