Home / 763,399.60-1,145,536.80-290,424.40

Finding the Fourth Proportional to 763,399.60, 1,145,536.80 and 290,424.40

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Solution

The fourth proportional to 763,399.60, 1,145,536.80 and 290,424.40 is: 435,803.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,399.60 : 1,145,536.80 = 290,424.40 : x
  2. Step 2: Convert to fraction form
    763,399.60/1,145,536.80 = 290,424.40/x
  3. Step 3: Cross multiply
    763,399.60x = 1,145,536.80 × 290,424.40
  4. Step 4: Simplify right side
    763,399.60x = 332,691,837,817.92
  5. Step 5: Solve for x
    x = 332,691,837,817.92/763,399.60
  6. Step 6: Final answer
    x = 435,803.00

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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.