Home / 772,495.28-1,066,024.38-428,332.55

Finding the Fourth Proportional to 772,495.28, 1,066,024.38 and 428,332.55

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Solution

The fourth proportional to 772,495.28, 1,066,024.38 and 428,332.55 is: 591,088.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,495.28 : 1,066,024.38 = 428,332.55 : x
  2. Step 2: Convert to fraction form
    772,495.28/1,066,024.38 = 428,332.55/x
  3. Step 3: Cross multiply
    772,495.28x = 1,066,024.38 × 428,332.55
  4. Step 4: Simplify right side
    772,495.28x = 456,612,938,905.91
  5. Step 5: Solve for x
    x = 456,612,938,905.91/772,495.28
  6. Step 6: Final answer
    x = 591,088.33

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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.