Home / 404,750.20-607,271.10-390,170.20

Finding the Fourth Proportional to 404,750.20, 607,271.10 and 390,170.20

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Solution

The fourth proportional to 404,750.20, 607,271.10 and 390,170.20 is: 585,395.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,750.20 : 607,271.10 = 390,170.20 : x
  2. Step 2: Convert to fraction form
    404,750.20/607,271.10 = 390,170.20/x
  3. Step 3: Cross multiply
    404,750.20x = 607,271.10 × 390,170.20
  4. Step 4: Simplify right side
    404,750.20x = 236,939,086,541.22
  5. Step 5: Solve for x
    x = 236,939,086,541.22/404,750.20
  6. Step 6: Final answer
    x = 585,395.85

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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.