Home / 772,545.35-1,066,125.34-428,395.80

Finding the Fourth Proportional to 772,545.35, 1,066,125.34 and 428,395.80

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Solution

The fourth proportional to 772,545.35, 1,066,125.34 and 428,395.80 is: 591,193.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,545.35 : 1,066,125.34 = 428,395.80 : x
  2. Step 2: Convert to fraction form
    772,545.35/1,066,125.34 = 428,395.80/x
  3. Step 3: Cross multiply
    772,545.35x = 1,066,125.34 × 428,395.80
  4. Step 4: Simplify right side
    772,545.35x = 456,723,617,929.57
  5. Step 5: Solve for x
    x = 456,723,617,929.57/772,545.35
  6. Step 6: Final answer
    x = 591,193.28

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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.