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Finding the Fourth Proportional to 568,925.12, 785,119.32 and 310,805.72

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Solution

The fourth proportional to 568,925.12, 785,119.32 and 310,805.72 is: 428,913.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,925.12 : 785,119.32 = 310,805.72 : x
  2. Step 2: Convert to fraction form
    568,925.12/785,119.32 = 310,805.72/x
  3. Step 3: Cross multiply
    568,925.12x = 785,119.32 × 310,805.72
  4. Step 4: Simplify right side
    568,925.12x = 244,019,575,538.51
  5. Step 5: Solve for x
    x = 244,019,575,538.51/568,925.12
  6. Step 6: Final answer
    x = 428,913.34

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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.