Home / 7,280,912,016.80-10,921,368,025.20-7,208,352,605.60

Finding the Fourth Proportional to 7,280,912,016.80, 10,921,368,025.20 and 7,208,352,605.60

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Solution

The fourth proportional to 7,280,912,016.80, 10,921,368,025.20 and 7,208,352,605.60 is: 10,812,528,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280,912,016.80 : 10,921,368,025.20 = 7,208,352,605.60 : x
  2. Step 2: Convert to fraction form
    7,280,912,016.80/10,921,368,025.20 = 7,208,352,605.60/x
  3. Step 3: Cross multiply
    7,280,912,016.80x = 10,921,368,025.20 × 7,208,352,605.60
  4. Step 4: Simplify right side
    7,280,912,016.80x = 78,725,071,661,166,952,448
  5. Step 5: Solve for x
    x = 78,725,071,661,166,952,448/7,280,912,016.80
  6. Step 6: Final answer
    x = 10,812,528,908.40

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Double scale
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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.