Home / 712,102.46-982,701.32-389,812.77

Finding the Fourth Proportional to 712,102.46, 982,701.32 and 389,812.77

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Solution

The fourth proportional to 712,102.46, 982,701.32 and 389,812.77 is: 537,941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,102.46 : 982,701.32 = 389,812.77 : x
  2. Step 2: Convert to fraction form
    712,102.46/982,701.32 = 389,812.77/x
  3. Step 3: Cross multiply
    712,102.46x = 982,701.32 × 389,812.77
  4. Step 4: Simplify right side
    712,102.46x = 383,069,521,682.79
  5. Step 5: Solve for x
    x = 383,069,521,682.79/712,102.46
  6. Step 6: Final answer
    x = 537,941.58

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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.