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Finding the Fourth Proportional to 720,392.32, 1,080,549.36 and 365,397.12

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Solution

The fourth proportional to 720,392.32, 1,080,549.36 and 365,397.12 is: 548,075.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,392.32 : 1,080,549.36 = 365,397.12 : x
  2. Step 2: Convert to fraction form
    720,392.32/1,080,549.36 = 365,397.12/x
  3. Step 3: Cross multiply
    720,392.32x = 1,080,549.36 × 365,397.12
  4. Step 4: Simplify right side
    720,392.32x = 394,829,624,161.84
  5. Step 5: Solve for x
    x = 394,829,624,161.84/720,392.32
  6. Step 6: Final answer
    x = 548,075.84

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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.