Home / 811,013.04-1,119,100.32-448,387.92

Finding the Fourth Proportional to 811,013.04, 1,119,100.32 and 448,387.92

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Solution

The fourth proportional to 811,013.04, 1,119,100.32 and 448,387.92 is: 618,721.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,013.04 : 1,119,100.32 = 448,387.92 : x
  2. Step 2: Convert to fraction form
    811,013.04/1,119,100.32 = 448,387.92/x
  3. Step 3: Cross multiply
    811,013.04x = 1,119,100.32 × 448,387.92
  4. Step 4: Simplify right side
    811,013.04x = 501,791,064,756.13
  5. Step 5: Solve for x
    x = 501,791,064,756.13/811,013.04
  6. Step 6: Final answer
    x = 618,721.33

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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.