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Finding the Fourth Proportional to 401,420.40, 602,130.60 and 395,199.60

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Solution

The fourth proportional to 401,420.40, 602,130.60 and 395,199.60 is: 592,799.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,420.40 : 602,130.60 = 395,199.60 : x
  2. Step 2: Convert to fraction form
    401,420.40/602,130.60 = 395,199.60/x
  3. Step 3: Cross multiply
    401,420.40x = 602,130.60 × 395,199.60
  4. Step 4: Simplify right side
    401,420.40x = 237,961,772,267.76
  5. Step 5: Solve for x
    x = 237,961,772,267.76/401,420.40
  6. Step 6: Final answer
    x = 592,799.40

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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.