Home / 858,673,640.90-1,288,010,461.35-800,852,860.10

Finding the Fourth Proportional to 858,673,640.90, 1,288,010,461.35 and 800,852,860.10

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Solution

The fourth proportional to 858,673,640.90, 1,288,010,461.35 and 800,852,860.10 is: 1,201,279,290.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,673,640.90 : 1,288,010,461.35 = 800,852,860.10 : x
  2. Step 2: Convert to fraction form
    858,673,640.90/1,288,010,461.35 = 800,852,860.10/x
  3. Step 3: Cross multiply
    858,673,640.90x = 1,288,010,461.35 × 800,852,860.10
  4. Step 4: Simplify right side
    858,673,640.90x = 1,031,506,861,810,867,968
  5. Step 5: Solve for x
    x = 1,031,506,861,810,867,968/858,673,640.90
  6. Step 6: Final answer
    x = 1,201,279,290.15

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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.