Home / 912,636.30-1,259,387.16-499,091.47

Finding the Fourth Proportional to 912,636.30, 1,259,387.16 and 499,091.47

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Solution

The fourth proportional to 912,636.30, 1,259,387.16 and 499,091.47 is: 688,718.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,636.30 : 1,259,387.16 = 499,091.47 : x
  2. Step 2: Convert to fraction form
    912,636.30/1,259,387.16 = 499,091.47/x
  3. Step 3: Cross multiply
    912,636.30x = 1,259,387.16 × 499,091.47
  4. Step 4: Simplify right side
    912,636.30x = 628,549,395,258.60
  5. Step 5: Solve for x
    x = 628,549,395,258.60/912,636.30
  6. Step 6: Final answer
    x = 688,718.38

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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.