Home / 905,904.30-1,358,856.45-486,000.30

Finding the Fourth Proportional to 905,904.30, 1,358,856.45 and 486,000.30

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Solution

The fourth proportional to 905,904.30, 1,358,856.45 and 486,000.30 is: 729,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,904.30 : 1,358,856.45 = 486,000.30 : x
  2. Step 2: Convert to fraction form
    905,904.30/1,358,856.45 = 486,000.30/x
  3. Step 3: Cross multiply
    905,904.30x = 1,358,856.45 × 486,000.30
  4. Step 4: Simplify right side
    905,904.30x = 660,404,642,356.94
  5. Step 5: Solve for x
    x = 660,404,642,356.94/905,904.30
  6. Step 6: Final answer
    x = 729,000.45

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Half scale
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Double scale
Find fourth proportional to 905,905.30, 1,358,857.95 and 486,001.30
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.