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Finding the Fourth Proportional to 425,515.20, 637,616.70 and 369,090.60

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Solution

The fourth proportional to 425,515.20, 637,616.70 and 369,090.60 is: 553,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,515.20 : 637,616.70 = 369,090.60 : x
  2. Step 2: Convert to fraction form
    425,515.20/637,616.70 = 369,090.60/x
  3. Step 3: Cross multiply
    425,515.20x = 637,616.70 × 369,090.60
  4. Step 4: Simplify right side
    425,515.20x = 235,338,330,373.02
  5. Step 5: Solve for x
    x = 235,338,330,373.02/425,515.20
  6. Step 6: Final answer
    x = 553,066.80

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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.