Home / 391,018,205.40-586,905,221.70-197,148,528.60

Finding the Fourth Proportional to 391,018,205.40, 586,905,221.70 and 197,148,528.60

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Solution

The fourth proportional to 391,018,205.40, 586,905,221.70 and 197,148,528.60 is: 295,913,334.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,018,205.40 : 586,905,221.70 = 197,148,528.60 : x
  2. Step 2: Convert to fraction form
    391,018,205.40/586,905,221.70 = 197,148,528.60/x
  3. Step 3: Cross multiply
    391,018,205.40x = 586,905,221.70 × 197,148,528.60
  4. Step 4: Simplify right side
    391,018,205.40x = 115,707,500,885,811,792
  5. Step 5: Solve for x
    x = 115,707,500,885,811,792/391,018,205.40
  6. Step 6: Final answer
    x = 295,913,334.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.