Home / 810,119,882.25-1,118,145,287.77-492,512,640.75

Finding the Fourth Proportional to 810,119,882.25, 1,118,145,287.77 and 492,512,640.75

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Solution

The fourth proportional to 810,119,882.25, 1,118,145,287.77 and 492,512,640.75 is: 679,776,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,119,882.25 : 1,118,145,287.77 = 492,512,640.75 : x
  2. Step 2: Convert to fraction form
    810,119,882.25/1,118,145,287.77 = 492,512,640.75/x
  3. Step 3: Cross multiply
    810,119,882.25x = 1,118,145,287.77 × 492,512,640.75
  4. Step 4: Simplify right side
    810,119,882.25x = 550,700,688,416,180,672
  5. Step 5: Solve for x
    x = 550,700,688,416,180,672/810,119,882.25
  6. Step 6: Final answer
    x = 679,776,784.25

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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.