Home / 1,275,609,986.40-1,913,414,979.60-306,261,602.40

Finding the Fourth Proportional to 1,275,609,986.40, 1,913,414,979.60 and 306,261,602.40

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Solution

The fourth proportional to 1,275,609,986.40, 1,913,414,979.60 and 306,261,602.40 is: 459,392,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,609,986.40 : 1,913,414,979.60 = 306,261,602.40 : x
  2. Step 2: Convert to fraction form
    1,275,609,986.40/1,913,414,979.60 = 306,261,602.40/x
  3. Step 3: Cross multiply
    1,275,609,986.40x = 1,913,414,979.60 × 306,261,602.40
  4. Step 4: Simplify right side
    1,275,609,986.40x = 586,005,537,708,459,264
  5. Step 5: Solve for x
    x = 586,005,537,708,459,264/1,275,609,986.40
  6. Step 6: Final answer
    x = 459,392,403.60

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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.