Home / 858,692,984.40-1,288,039,476.60-800,872,203.60

Finding the Fourth Proportional to 858,692,984.40, 1,288,039,476.60 and 800,872,203.60

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Solution

The fourth proportional to 858,692,984.40, 1,288,039,476.60 and 800,872,203.60 is: 1,201,308,305.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,692,984.40 : 1,288,039,476.60 = 800,872,203.60 : x
  2. Step 2: Convert to fraction form
    858,692,984.40/1,288,039,476.60 = 800,872,203.60/x
  3. Step 3: Cross multiply
    858,692,984.40x = 1,288,039,476.60 × 800,872,203.60
  4. Step 4: Simplify right side
    858,692,984.40x = 1,031,555,013,948,432,640
  5. Step 5: Solve for x
    x = 1,031,555,013,948,432,640/858,692,984.40
  6. Step 6: Final answer
    x = 1,201,308,305.40

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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.