Home / 738,695.90-1,019,400.30-399,164.15

Finding the Fourth Proportional to 738,695.90, 1,019,400.30 and 399,164.15

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Solution

The fourth proportional to 738,695.90, 1,019,400.30 and 399,164.15 is: 550,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,695.90 : 1,019,400.30 = 399,164.15 : x
  2. Step 2: Convert to fraction form
    738,695.90/1,019,400.30 = 399,164.15/x
  3. Step 3: Cross multiply
    738,695.90x = 1,019,400.30 × 399,164.15
  4. Step 4: Simplify right side
    738,695.90x = 406,908,049,162.24
  5. Step 5: Solve for x
    x = 406,908,049,162.24/738,695.90
  6. Step 6: Final answer
    x = 550,846.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.