Home / 280,025,672.40-420,038,508.60-263,005,563.60

Finding the Fourth Proportional to 280,025,672.40, 420,038,508.60 and 263,005,563.60

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Solution

The fourth proportional to 280,025,672.40, 420,038,508.60 and 263,005,563.60 is: 394,508,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,025,672.40 : 420,038,508.60 = 263,005,563.60 : x
  2. Step 2: Convert to fraction form
    280,025,672.40/420,038,508.60 = 263,005,563.60/x
  3. Step 3: Cross multiply
    280,025,672.40x = 420,038,508.60 × 263,005,563.60
  4. Step 4: Simplify right side
    280,025,672.40x = 110,472,464,688,046,448
  5. Step 5: Solve for x
    x = 110,472,464,688,046,448/280,025,672.40
  6. Step 6: Final answer
    x = 394,508,345.40

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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.