Home / 821,715.48-1,133,314.86-499,419.48

Finding the Fourth Proportional to 821,715.48, 1,133,314.86 and 499,419.48

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Solution

The fourth proportional to 821,715.48, 1,133,314.86 and 499,419.48 is: 688,802.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,715.48 : 1,133,314.86 = 499,419.48 : x
  2. Step 2: Convert to fraction form
    821,715.48/1,133,314.86 = 499,419.48/x
  3. Step 3: Cross multiply
    821,715.48x = 1,133,314.86 × 499,419.48
  4. Step 4: Simplify right side
    821,715.48x = 565,999,518,057.47
  5. Step 5: Solve for x
    x = 565,999,518,057.47/821,715.48
  6. Step 6: Final answer
    x = 688,802.31

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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.