Home / 738,518.85-1,019,156.02-398,987.10

Finding the Fourth Proportional to 738,518.85, 1,019,156.02 and 398,987.10

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Solution

The fourth proportional to 738,518.85, 1,019,156.02 and 398,987.10 is: 550,602.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,518.85 : 1,019,156.02 = 398,987.10 : x
  2. Step 2: Convert to fraction form
    738,518.85/1,019,156.02 = 398,987.10/x
  3. Step 3: Cross multiply
    738,518.85x = 1,019,156.02 × 398,987.10
  4. Step 4: Simplify right side
    738,518.85x = 406,630,099,771.56
  5. Step 5: Solve for x
    x = 406,630,099,771.56/738,518.85
  6. Step 6: Final answer
    x = 550,602.20

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Double scale
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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.