Home / 827,911.09-1,240,827.81-354,039.22

Finding the Fourth Proportional to 827,911.09, 1,240,827.81 and 354,039.22

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Solution

The fourth proportional to 827,911.09, 1,240,827.81 and 354,039.22 is: 530,614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,911.09 : 1,240,827.81 = 354,039.22 : x
  2. Step 2: Convert to fraction form
    827,911.09/1,240,827.81 = 354,039.22/x
  3. Step 3: Cross multiply
    827,911.09x = 1,240,827.81 × 354,039.22
  4. Step 4: Simplify right side
    827,911.09x = 439,301,710,006.71
  5. Step 5: Solve for x
    x = 439,301,710,006.71/827,911.09
  6. Step 6: Final answer
    x = 530,614.60

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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.