Home / 459,938.20-689,907.30-404,642.20

Finding the Fourth Proportional to 459,938.20, 689,907.30 and 404,642.20

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Solution

The fourth proportional to 459,938.20, 689,907.30 and 404,642.20 is: 606,963.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,938.20 : 689,907.30 = 404,642.20 : x
  2. Step 2: Convert to fraction form
    459,938.20/689,907.30 = 404,642.20/x
  3. Step 3: Cross multiply
    459,938.20x = 689,907.30 × 404,642.20
  4. Step 4: Simplify right side
    459,938.20x = 279,165,607,668.06
  5. Step 5: Solve for x
    x = 279,165,607,668.06/459,938.20
  6. Step 6: Final answer
    x = 606,963.30

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Double scale
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Similar ratio
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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.