Home / 815,953,500.30-1,223,930,250.45-689,683,118.70

Finding the Fourth Proportional to 815,953,500.30, 1,223,930,250.45 and 689,683,118.70

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Solution

The fourth proportional to 815,953,500.30, 1,223,930,250.45 and 689,683,118.70 is: 1,034,524,678.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,953,500.30 : 1,223,930,250.45 = 689,683,118.70 : x
  2. Step 2: Convert to fraction form
    815,953,500.30/1,223,930,250.45 = 689,683,118.70/x
  3. Step 3: Cross multiply
    815,953,500.30x = 1,223,930,250.45 × 689,683,118.70
  4. Step 4: Simplify right side
    815,953,500.30x = 844,124,032,201,628,160
  5. Step 5: Solve for x
    x = 844,124,032,201,628,160/815,953,500.30
  6. Step 6: Final answer
    x = 1,034,524,678.05

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1.5x scale

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.