Home / 772,692.05-1,066,378.86-428,638.90

Finding the Fourth Proportional to 772,692.05, 1,066,378.86 and 428,638.90

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Solution

The fourth proportional to 772,692.05, 1,066,378.86 and 428,638.90 is: 591,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,692.05 : 1,066,378.86 = 428,638.90 : x
  2. Step 2: Convert to fraction form
    772,692.05/1,066,378.86 = 428,638.90/x
  3. Step 3: Cross multiply
    772,692.05x = 1,066,378.86 × 428,638.90
  4. Step 4: Simplify right side
    772,692.05x = 457,091,454,058.57
  5. Step 5: Solve for x
    x = 457,091,454,058.57/772,692.05
  6. Step 6: Final answer
    x = 591,557.09

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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.