Home / 817,440.90-1,128,068.43-454,888.14

Finding the Fourth Proportional to 817,440.90, 1,128,068.43 and 454,888.14

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Solution

The fourth proportional to 817,440.90, 1,128,068.43 and 454,888.14 is: 627,745.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,440.90 : 1,128,068.43 = 454,888.14 : x
  2. Step 2: Convert to fraction form
    817,440.90/1,128,068.43 = 454,888.14/x
  3. Step 3: Cross multiply
    817,440.90x = 1,128,068.43 × 454,888.14
  4. Step 4: Simplify right side
    817,440.90x = 513,144,949,915.42
  5. Step 5: Solve for x
    x = 513,144,949,915.42/817,440.90
  6. Step 6: Final answer
    x = 627,745.63

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.