Home / 917,693.80-1,376,540.70-286,671.40

Finding the Fourth Proportional to 917,693.80, 1,376,540.70 and 286,671.40

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Solution

The fourth proportional to 917,693.80, 1,376,540.70 and 286,671.40 is: 430,007.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,693.80 : 1,376,540.70 = 286,671.40 : x
  2. Step 2: Convert to fraction form
    917,693.80/1,376,540.70 = 286,671.40/x
  3. Step 3: Cross multiply
    917,693.80x = 1,376,540.70 × 286,671.40
  4. Step 4: Simplify right side
    917,693.80x = 394,614,849,625.98
  5. Step 5: Solve for x
    x = 394,614,849,625.98/917,693.80
  6. Step 6: Final answer
    x = 430,007.10

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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.