Home / 1,913,925,961.90-2,870,888,942.85-686,934,981.10

Finding the Fourth Proportional to 1,913,925,961.90, 2,870,888,942.85 and 686,934,981.10

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Solution

The fourth proportional to 1,913,925,961.90, 2,870,888,942.85 and 686,934,981.10 is: 1,030,402,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,925,961.90 : 2,870,888,942.85 = 686,934,981.10 : x
  2. Step 2: Convert to fraction form
    1,913,925,961.90/2,870,888,942.85 = 686,934,981.10/x
  3. Step 3: Cross multiply
    1,913,925,961.90x = 2,870,888,942.85 × 686,934,981.10
  4. Step 4: Simplify right side
    1,913,925,961.90x = 1,972,114,041,696,863,744
  5. Step 5: Solve for x
    x = 1,972,114,041,696,863,744/1,913,925,961.90
  6. Step 6: Final answer
    x = 1,030,402,471.65

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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.