Home / 517,386,414.40-776,079,621.60-258,641,569.60

Finding the Fourth Proportional to 517,386,414.40, 776,079,621.60 and 258,641,569.60

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Solution

The fourth proportional to 517,386,414.40, 776,079,621.60 and 258,641,569.60 is: 387,962,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,386,414.40 : 776,079,621.60 = 258,641,569.60 : x
  2. Step 2: Convert to fraction form
    517,386,414.40/776,079,621.60 = 258,641,569.60/x
  3. Step 3: Cross multiply
    517,386,414.40x = 776,079,621.60 × 258,641,569.60
  4. Step 4: Simplify right side
    517,386,414.40x = 200,726,451,465,198,080
  5. Step 5: Solve for x
    x = 200,726,451,465,198,080/517,386,414.40
  6. Step 6: Final answer
    x = 387,962,354.40

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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.