Home / 819,627.69-1,131,166.85-497,312.49

Finding the Fourth Proportional to 819,627.69, 1,131,166.85 and 497,312.49

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Solution

The fourth proportional to 819,627.69, 1,131,166.85 and 497,312.49 is: 686,340.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,627.69 : 1,131,166.85 = 497,312.49 : x
  2. Step 2: Convert to fraction form
    819,627.69/1,131,166.85 = 497,312.49/x
  3. Step 3: Cross multiply
    819,627.69x = 1,131,166.85 × 497,312.49
  4. Step 4: Simplify right side
    819,627.69x = 562,543,402,778.96
  5. Step 5: Solve for x
    x = 562,543,402,778.96/819,627.69
  6. Step 6: Final answer
    x = 686,340.16

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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.