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Finding the Fourth Proportional to 20,155,430,924.40, 30,178,726,828.20 and 20,155,430,924.40

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Solution

The fourth proportional to 20,155,430,924.40, 30,178,726,828.20 and 20,155,430,924.40 is: 30,178,726,828.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155,430,924.40 : 30,178,726,828.20 = 20,155,430,924.40 : x
  2. Step 2: Convert to fraction form
    20,155,430,924.40/30,178,726,828.20 = 20,155,430,924.40/x
  3. Step 3: Cross multiply
    20,155,430,924.40x = 30,178,726,828.20 × 20,155,430,924.40
  4. Step 4: Simplify right side
    20,155,430,924.40x = 608,265,243,972,122,312,704
  5. Step 5: Solve for x
    x = 608,265,243,972,122,312,704/20,155,430,924.40
  6. Step 6: Final answer
    x = 30,178,726,828.20

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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.