Home / 910,128.51-1,256,227.19-528,278.31

Finding the Fourth Proportional to 910,128.51, 1,256,227.19 and 528,278.31

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Solution

The fourth proportional to 910,128.51, 1,256,227.19 and 528,278.31 is: 729,169.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,128.51 : 1,256,227.19 = 528,278.31 : x
  2. Step 2: Convert to fraction form
    910,128.51/1,256,227.19 = 528,278.31/x
  3. Step 3: Cross multiply
    910,128.51x = 1,256,227.19 × 528,278.31
  4. Step 4: Simplify right side
    910,128.51x = 663,637,574,267.86
  5. Step 5: Solve for x
    x = 663,637,574,267.86/910,128.51
  6. Step 6: Final answer
    x = 729,169.09

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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.