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Finding the Fourth Proportional to 720,116.12, 1,080,852.15 and 365,384.72

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Solution

The fourth proportional to 720,116.12, 1,080,852.15 and 365,384.72 is: 548,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,116.12 : 1,080,852.15 = 365,384.72 : x
  2. Step 2: Convert to fraction form
    720,116.12/1,080,852.15 = 365,384.72/x
  3. Step 3: Cross multiply
    720,116.12x = 1,080,852.15 × 365,384.72
  4. Step 4: Simplify right side
    720,116.12x = 394,926,864,261.47
  5. Step 5: Solve for x
    x = 394,926,864,261.47/720,116.12
  6. Step 6: Final answer
    x = 548,421.08

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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.