Home / 890,276,568.40-1,335,414,852.60-431,111,544.40

Finding the Fourth Proportional to 890,276,568.40, 1,335,414,852.60 and 431,111,544.40

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Solution

The fourth proportional to 890,276,568.40, 1,335,414,852.60 and 431,111,544.40 is: 646,667,316.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,276,568.40 : 1,335,414,852.60 = 431,111,544.40 : x
  2. Step 2: Convert to fraction form
    890,276,568.40/1,335,414,852.60 = 431,111,544.40/x
  3. Step 3: Cross multiply
    890,276,568.40x = 1,335,414,852.60 × 431,111,544.40
  4. Step 4: Simplify right side
    890,276,568.40x = 575,712,759,519,084,288
  5. Step 5: Solve for x
    x = 575,712,759,519,084,288/890,276,568.40
  6. Step 6: Final answer
    x = 646,667,316.60

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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.