Home / 691,301.45-1,037,000.78-391,925.45

Finding the Fourth Proportional to 691,301.45, 1,037,000.78 and 391,925.45

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Solution

The fourth proportional to 691,301.45, 1,037,000.78 and 391,925.45 is: 587,915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,301.45 : 1,037,000.78 = 391,925.45 : x
  2. Step 2: Convert to fraction form
    691,301.45/1,037,000.78 = 391,925.45/x
  3. Step 3: Cross multiply
    691,301.45x = 1,037,000.78 × 391,925.45
  4. Step 4: Simplify right side
    691,301.45x = 406,426,997,351.85
  5. Step 5: Solve for x
    x = 406,426,997,351.85/691,301.45
  6. Step 6: Final answer
    x = 587,915.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.