Home / 786,833,911.50-1,085,926,013.09-447,824,812.18

Finding the Fourth Proportional to 786,833,911.50, 1,085,926,013.09 and 447,824,812.18

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Solution

The fourth proportional to 786,833,911.50, 1,085,926,013.09 and 447,824,812.18 is: 618,052,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,833,911.50 : 1,085,926,013.09 = 447,824,812.18 : x
  2. Step 2: Convert to fraction form
    786,833,911.50/1,085,926,013.09 = 447,824,812.18/x
  3. Step 3: Cross multiply
    786,833,911.50x = 1,085,926,013.09 × 447,824,812.18
  4. Step 4: Simplify right side
    786,833,911.50x = 486,304,612,851,166,400
  5. Step 5: Solve for x
    x = 486,304,612,851,166,400/786,833,911.50
  6. Step 6: Final answer
    x = 618,052,432.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.