Home / 858,673,639.90-1,288,010,459.85-800,852,859.10

Finding the Fourth Proportional to 858,673,639.90, 1,288,010,459.85 and 800,852,859.10

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Solution

The fourth proportional to 858,673,639.90, 1,288,010,459.85 and 800,852,859.10 is: 1,201,279,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,673,639.90 : 1,288,010,459.85 = 800,852,859.10 : x
  2. Step 2: Convert to fraction form
    858,673,639.90/1,288,010,459.85 = 800,852,859.10/x
  3. Step 3: Cross multiply
    858,673,639.90x = 1,288,010,459.85 × 800,852,859.10
  4. Step 4: Simplify right side
    858,673,639.90x = 1,031,506,859,321,578,240
  5. Step 5: Solve for x
    x = 1,031,506,859,321,578,240/858,673,639.90
  6. Step 6: Final answer
    x = 1,201,279,288.65

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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.