Home / 711,899.61-982,408.32-389,603.22

Finding the Fourth Proportional to 711,899.61, 982,408.32 and 389,603.22

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Solution

The fourth proportional to 711,899.61, 982,408.32 and 389,603.22 is: 537,645.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,899.61 : 982,408.32 = 389,603.22 : x
  2. Step 2: Convert to fraction form
    711,899.61/982,408.32 = 389,603.22/x
  3. Step 3: Cross multiply
    711,899.61x = 982,408.32 × 389,603.22
  4. Step 4: Simplify right side
    711,899.61x = 382,749,444,826.79
  5. Step 5: Solve for x
    x = 382,749,444,826.79/711,899.61
  6. Step 6: Final answer
    x = 537,645.25

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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.