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Finding the Fourth Proportional to 425,404.80, 618,411.60 and 425,404.80

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Solution

The fourth proportional to 425,404.80, 618,411.60 and 425,404.80 is: 618,411.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,404.80 : 618,411.60 = 425,404.80 : x
  2. Step 2: Convert to fraction form
    425,404.80/618,411.60 = 425,404.80/x
  3. Step 3: Cross multiply
    425,404.80x = 618,411.60 × 425,404.80
  4. Step 4: Simplify right side
    425,404.80x = 263,075,263,015.68
  5. Step 5: Solve for x
    x = 263,075,263,015.68/425,404.80
  6. Step 6: Final answer
    x = 618,411.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.