Home / 697,782.40-1,046,673.60-643,868.80

Finding the Fourth Proportional to 697,782.40, 1,046,673.60 and 643,868.80

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Solution

The fourth proportional to 697,782.40, 1,046,673.60 and 643,868.80 is: 965,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,782.40 : 1,046,673.60 = 643,868.80 : x
  2. Step 2: Convert to fraction form
    697,782.40/1,046,673.60 = 643,868.80/x
  3. Step 3: Cross multiply
    697,782.40x = 1,046,673.60 × 643,868.80
  4. Step 4: Simplify right side
    697,782.40x = 673,920,474,823.68
  5. Step 5: Solve for x
    x = 673,920,474,823.68/697,782.40
  6. Step 6: Final answer
    x = 965,803.20

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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.