Home / 926,904.70-1,390,357.05-394,443.10

Finding the Fourth Proportional to 926,904.70, 1,390,357.05 and 394,443.10

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Solution

The fourth proportional to 926,904.70, 1,390,357.05 and 394,443.10 is: 591,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,904.70 : 1,390,357.05 = 394,443.10 : x
  2. Step 2: Convert to fraction form
    926,904.70/1,390,357.05 = 394,443.10/x
  3. Step 3: Cross multiply
    926,904.70x = 1,390,357.05 × 394,443.10
  4. Step 4: Simplify right side
    926,904.70x = 548,416,744,908.86
  5. Step 5: Solve for x
    x = 548,416,744,908.86/926,904.70
  6. Step 6: Final answer
    x = 591,664.65

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Double scale
Find fourth proportional to 926,905.70, 1,390,358.55 and 394,444.10
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.