Home / 855,140.09-1,180,114.92-515,630.21

Finding the Fourth Proportional to 855,140.09, 1,180,114.92 and 515,630.21

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Solution

The fourth proportional to 855,140.09, 1,180,114.92 and 515,630.21 is: 711,582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,140.09 : 1,180,114.92 = 515,630.21 : x
  2. Step 2: Convert to fraction form
    855,140.09/1,180,114.92 = 515,630.21/x
  3. Step 3: Cross multiply
    855,140.09x = 1,180,114.92 × 515,630.21
  4. Step 4: Simplify right side
    855,140.09x = 608,502,898,123.16
  5. Step 5: Solve for x
    x = 608,502,898,123.16/855,140.09
  6. Step 6: Final answer
    x = 711,582.71

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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.