Home / 711,810.42-982,298.49-389,520.60

Finding the Fourth Proportional to 711,810.42, 982,298.49 and 389,520.60

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Solution

The fourth proportional to 711,810.42, 982,298.49 and 389,520.60 is: 537,538.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,810.42 : 982,298.49 = 389,520.60 : x
  2. Step 2: Convert to fraction form
    711,810.42/982,298.49 = 389,520.60/x
  3. Step 3: Cross multiply
    711,810.42x = 982,298.49 × 389,520.60
  4. Step 4: Simplify right side
    711,810.42x = 382,625,497,203.89
  5. Step 5: Solve for x
    x = 382,625,497,203.89/711,810.42
  6. Step 6: Final answer
    x = 537,538.49

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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.