Home / 813,361.49-1,121,784.37-715,034.49

Finding the Fourth Proportional to 813,361.49, 1,121,784.37 and 715,034.49

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Solution

The fourth proportional to 813,361.49, 1,121,784.37 and 715,034.49 is: 986,172.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,361.49 : 1,121,784.37 = 715,034.49 : x
  2. Step 2: Convert to fraction form
    813,361.49/1,121,784.37 = 715,034.49/x
  3. Step 3: Cross multiply
    813,361.49x = 1,121,784.37 × 715,034.49
  4. Step 4: Simplify right side
    813,361.49x = 802,114,514,892.92
  5. Step 5: Solve for x
    x = 802,114,514,892.92/813,361.49
  6. Step 6: Final answer
    x = 986,172.24

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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.