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Finding the Fourth Proportional to 374,425.40, 561,638.10 and 360,428.60

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Solution

The fourth proportional to 374,425.40, 561,638.10 and 360,428.60 is: 540,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,425.40 : 561,638.10 = 360,428.60 : x
  2. Step 2: Convert to fraction form
    374,425.40/561,638.10 = 360,428.60/x
  3. Step 3: Cross multiply
    374,425.40x = 561,638.10 × 360,428.60
  4. Step 4: Simplify right side
    374,425.40x = 202,430,434,089.66
  5. Step 5: Solve for x
    x = 202,430,434,089.66/374,425.40
  6. Step 6: Final answer
    x = 540,642.90

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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.