Home / 1,387,280-1,914,601.92-783,706.88

Finding the Fourth Proportional to 1,387,280, 1,914,601.92 and 783,706.88

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Solution

The fourth proportional to 1,387,280, 1,914,601.92 and 783,706.88 is: 1,081,603.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,280 : 1,914,601.92 = 783,706.88 : x
  2. Step 2: Convert to fraction form
    1,387,280/1,914,601.92 = 783,706.88/x
  3. Step 3: Cross multiply
    1,387,280x = 1,914,601.92 × 783,706.88
  4. Step 4: Simplify right side
    1,387,280x = 1,500,486,697,165.21
  5. Step 5: Solve for x
    x = 1,500,486,697,165.21/1,387,280
  6. Step 6: Final answer
    x = 1,081,603.35

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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.