Home / 711,810.45-982,298.32-389,520.46

Finding the Fourth Proportional to 711,810.45, 982,298.32 and 389,520.46

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Solution

The fourth proportional to 711,810.45, 982,298.32 and 389,520.46 is: 537,538.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,810.45 : 982,298.32 = 389,520.46 : x
  2. Step 2: Convert to fraction form
    711,810.45/982,298.32 = 389,520.46/x
  3. Step 3: Cross multiply
    711,810.45x = 982,298.32 × 389,520.46
  4. Step 4: Simplify right side
    711,810.45x = 382,625,295,908.75
  5. Step 5: Solve for x
    x = 382,625,295,908.75/711,810.45
  6. Step 6: Final answer
    x = 537,538.18

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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.