Home / 712,056.13-982,637.77-389,768.06

Finding the Fourth Proportional to 712,056.13, 982,637.77 and 389,768.06

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Solution

The fourth proportional to 712,056.13, 982,637.77 and 389,768.06 is: 537,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,056.13 : 982,637.77 = 389,768.06 : x
  2. Step 2: Convert to fraction form
    712,056.13/982,637.77 = 389,768.06/x
  3. Step 3: Cross multiply
    712,056.13x = 982,637.77 × 389,768.06
  4. Step 4: Simplify right side
    712,056.13x = 383,000,818,777.80
  5. Step 5: Solve for x
    x = 383,000,818,777.80/712,056.13
  6. Step 6: Final answer
    x = 537,880.10

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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.