Home / 990,959.10-1,486,438.65-281,010.30

Finding the Fourth Proportional to 990,959.10, 1,486,438.65 and 281,010.30

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Solution

The fourth proportional to 990,959.10, 1,486,438.65 and 281,010.30 is: 421,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,959.10 : 1,486,438.65 = 281,010.30 : x
  2. Step 2: Convert to fraction form
    990,959.10/1,486,438.65 = 281,010.30/x
  3. Step 3: Cross multiply
    990,959.10x = 1,486,438.65 × 281,010.30
  4. Step 4: Simplify right side
    990,959.10x = 417,704,570,968.10
  5. Step 5: Solve for x
    x = 417,704,570,968.10/990,959.10
  6. Step 6: Final answer
    x = 421,515.45

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Half scale
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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.