Home / 638,613,504.40-957,920,256.60-207,792,000.40

Finding the Fourth Proportional to 638,613,504.40, 957,920,256.60 and 207,792,000.40

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Solution

The fourth proportional to 638,613,504.40, 957,920,256.60 and 207,792,000.40 is: 311,688,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,613,504.40 : 957,920,256.60 = 207,792,000.40 : x
  2. Step 2: Convert to fraction form
    638,613,504.40/957,920,256.60 = 207,792,000.40/x
  3. Step 3: Cross multiply
    638,613,504.40x = 957,920,256.60 × 207,792,000.40
  4. Step 4: Simplify right side
    638,613,504.40x = 199,048,166,342,595,328
  5. Step 5: Solve for x
    x = 199,048,166,342,595,328/638,613,504.40
  6. Step 6: Final answer
    x = 311,688,000.60

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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.