Home / 1,047,536.40-1,445,561.40-640,320.24

Finding the Fourth Proportional to 1,047,536.40, 1,445,561.40 and 640,320.24

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Solution

The fourth proportional to 1,047,536.40, 1,445,561.40 and 640,320.24 is: 883,618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,536.40 : 1,445,561.40 = 640,320.24 : x
  2. Step 2: Convert to fraction form
    1,047,536.40/1,445,561.40 = 640,320.24/x
  3. Step 3: Cross multiply
    1,047,536.40x = 1,445,561.40 × 640,320.24
  4. Step 4: Simplify right side
    1,047,536.40x = 925,622,222,582.74
  5. Step 5: Solve for x
    x = 925,622,222,582.74/1,047,536.40
  6. Step 6: Final answer
    x = 883,618.19

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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.