Home / 763,436.80-1,144,233.60-389,267.20

Finding the Fourth Proportional to 763,436.80, 1,144,233.60 and 389,267.20

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Solution

The fourth proportional to 763,436.80, 1,144,233.60 and 389,267.20 is: 583,430.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,436.80 : 1,144,233.60 = 389,267.20 : x
  2. Step 2: Convert to fraction form
    763,436.80/1,144,233.60 = 389,267.20/x
  3. Step 3: Cross multiply
    763,436.80x = 1,144,233.60 × 389,267.20
  4. Step 4: Simplify right side
    763,436.80x = 445,412,609,617.92
  5. Step 5: Solve for x
    x = 445,412,609,617.92/763,436.80
  6. Step 6: Final answer
    x = 583,430.89

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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.