Home / 688,985.28-1,033,411.10-209,217.25

Finding the Fourth Proportional to 688,985.28, 1,033,411.10 and 209,217.25

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Solution

The fourth proportional to 688,985.28, 1,033,411.10 and 209,217.25 is: 313,805.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,985.28 : 1,033,411.10 = 209,217.25 : x
  2. Step 2: Convert to fraction form
    688,985.28/1,033,411.10 = 209,217.25/x
  3. Step 3: Cross multiply
    688,985.28x = 1,033,411.10 × 209,217.25
  4. Step 4: Simplify right side
    688,985.28x = 216,207,422,894.22
  5. Step 5: Solve for x
    x = 216,207,422,894.22/688,985.28
  6. Step 6: Final answer
    x = 313,805.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.