Home / 911,384,868.09-1,257,913,449.52-554,076,721.40

Finding the Fourth Proportional to 911,384,868.09, 1,257,913,449.52 and 554,076,721.40

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Solution

The fourth proportional to 911,384,868.09, 1,257,913,449.52 and 554,076,721.40 is: 764,748,883.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,384,868.09 : 1,257,913,449.52 = 554,076,721.40 : x
  2. Step 2: Convert to fraction form
    911,384,868.09/1,257,913,449.52 = 554,076,721.40/x
  3. Step 3: Cross multiply
    911,384,868.09x = 1,257,913,449.52 × 554,076,721.40
  4. Step 4: Simplify right side
    911,384,868.09x = 696,980,559,914,400,640
  5. Step 5: Solve for x
    x = 696,980,559,914,400,640/911,384,868.09
  6. Step 6: Final answer
    x = 764,748,883.06

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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.