Home / 1,913,925,942.40-2,870,888,913.60-686,934,961.60

Finding the Fourth Proportional to 1,913,925,942.40, 2,870,888,913.60 and 686,934,961.60

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Solution

The fourth proportional to 1,913,925,942.40, 2,870,888,913.60 and 686,934,961.60 is: 1,030,402,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,925,942.40 : 2,870,888,913.60 = 686,934,961.60 : x
  2. Step 2: Convert to fraction form
    1,913,925,942.40/2,870,888,913.60 = 686,934,961.60/x
  3. Step 3: Cross multiply
    1,913,925,942.40x = 2,870,888,913.60 × 686,934,961.60
  4. Step 4: Simplify right side
    1,913,925,942.40x = 1,972,113,965,621,681,664
  5. Step 5: Solve for x
    x = 1,972,113,965,621,681,664/1,913,925,942.40
  6. Step 6: Final answer
    x = 1,030,402,442.40

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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.