Home / 711,868.02-982,364.76-389,571.66

Finding the Fourth Proportional to 711,868.02, 982,364.76 and 389,571.66

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Solution

The fourth proportional to 711,868.02, 982,364.76 and 389,571.66 is: 537,601.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,868.02 : 982,364.76 = 389,571.66 : x
  2. Step 2: Convert to fraction form
    711,868.02/982,364.76 = 389,571.66/x
  3. Step 3: Cross multiply
    711,868.02x = 982,364.76 × 389,571.66
  4. Step 4: Simplify right side
    711,868.02x = 382,701,470,278.70
  5. Step 5: Solve for x
    x = 382,701,470,278.70/711,868.02
  6. Step 6: Final answer
    x = 537,601.72

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Double scale
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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.