Home / 638,971,986.80-958,457,980.20-570,097,233.20

Finding the Fourth Proportional to 638,971,986.80, 958,457,980.20 and 570,097,233.20

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Solution

The fourth proportional to 638,971,986.80, 958,457,980.20 and 570,097,233.20 is: 855,145,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,971,986.80 : 958,457,980.20 = 570,097,233.20 : x
  2. Step 2: Convert to fraction form
    638,971,986.80/958,457,980.20 = 570,097,233.20/x
  3. Step 3: Cross multiply
    638,971,986.80x = 958,457,980.20 × 570,097,233.20
  4. Step 4: Simplify right side
    638,971,986.80x = 546,414,242,650,480,448
  5. Step 5: Solve for x
    x = 546,414,242,650,480,448/638,971,986.80
  6. Step 6: Final answer
    x = 855,145,849.80

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Double scale
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Similar ratio
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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.