Home / 1,918,133,130.45-2,688,107,360.55-1,918,133,130.45

Finding the Fourth Proportional to 1,918,133,130.45, 2,688,107,360.55 and 1,918,133,130.45

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Solution

The fourth proportional to 1,918,133,130.45, 2,688,107,360.55 and 1,918,133,130.45 is: 2,688,107,360.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,133,130.45 : 2,688,107,360.55 = 1,918,133,130.45 : x
  2. Step 2: Convert to fraction form
    1,918,133,130.45/2,688,107,360.55 = 1,918,133,130.45/x
  3. Step 3: Cross multiply
    1,918,133,130.45x = 2,688,107,360.55 × 1,918,133,130.45
  4. Step 4: Simplify right side
    1,918,133,130.45x = 5,156,147,786,477,458,432
  5. Step 5: Solve for x
    x = 5,156,147,786,477,458,432/1,918,133,130.45
  6. Step 6: Final answer
    x = 2,688,107,360.55

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.