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Finding the Fourth Proportional to 622,929.60, 933,811.20 and 487,918.80

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Solution

The fourth proportional to 622,929.60, 933,811.20 and 487,918.80 is: 731,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,929.60 : 933,811.20 = 487,918.80 : x
  2. Step 2: Convert to fraction form
    622,929.60/933,811.20 = 487,918.80/x
  3. Step 3: Cross multiply
    622,929.60x = 933,811.20 × 487,918.80
  4. Step 4: Simplify right side
    622,929.60x = 455,624,040,130.56
  5. Step 5: Solve for x
    x = 455,624,040,130.56/622,929.60
  6. Step 6: Final answer
    x = 731,421.40

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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.