Home / 817,100.90-1,225,848.18-256,135.40

Finding the Fourth Proportional to 817,100.90, 1,225,848.18 and 256,135.40

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Solution

The fourth proportional to 817,100.90, 1,225,848.18 and 256,135.40 is: 384,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,100.90 : 1,225,848.18 = 256,135.40 : x
  2. Step 2: Convert to fraction form
    817,100.90/1,225,848.18 = 256,135.40/x
  3. Step 3: Cross multiply
    817,100.90x = 1,225,848.18 × 256,135.40
  4. Step 4: Simplify right side
    817,100.90x = 313,983,117,948.70
  5. Step 5: Solve for x
    x = 313,983,117,948.70/817,100.90
  6. Step 6: Final answer
    x = 384,264.80

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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.