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Finding the Fourth Proportional to 712,203.32, 982,803.72 and 389,852.28

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Solution

The fourth proportional to 712,203.32, 982,803.72 and 389,852.28 is: 537,975.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,203.32 : 982,803.72 = 389,852.28 : x
  2. Step 2: Convert to fraction form
    712,203.32/982,803.72 = 389,852.28/x
  3. Step 3: Cross multiply
    712,203.32x = 982,803.72 × 389,852.28
  4. Step 4: Simplify right side
    712,203.32x = 383,148,271,034.48
  5. Step 5: Solve for x
    x = 383,148,271,034.48/712,203.32
  6. Step 6: Final answer
    x = 537,975.97

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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.