Home / 910,688.33-1,256,860.10-518,316.69

Finding the Fourth Proportional to 910,688.33, 1,256,860.10 and 518,316.69

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Solution

The fourth proportional to 910,688.33, 1,256,860.10 and 518,316.69 is: 715,339.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,688.33 : 1,256,860.10 = 518,316.69 : x
  2. Step 2: Convert to fraction form
    910,688.33/1,256,860.10 = 518,316.69/x
  3. Step 3: Cross multiply
    910,688.33x = 1,256,860.10 × 518,316.69
  4. Step 4: Simplify right side
    910,688.33x = 651,451,559,244.98
  5. Step 5: Solve for x
    x = 651,451,559,244.98/910,688.33
  6. Step 6: Final answer
    x = 715,339.75

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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.