Home / 674,064.40-929,781.69-512,565.40

Finding the Fourth Proportional to 674,064.40, 929,781.69 and 512,565.40

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Solution

The fourth proportional to 674,064.40, 929,781.69 and 512,565.40 is: 707,015.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,064.40 : 929,781.69 = 512,565.40 : x
  2. Step 2: Convert to fraction form
    674,064.40/929,781.69 = 512,565.40/x
  3. Step 3: Cross multiply
    674,064.40x = 929,781.69 × 512,565.40
  4. Step 4: Simplify right side
    674,064.40x = 476,573,923,847.53
  5. Step 5: Solve for x
    x = 476,573,923,847.53/674,064.40
  6. Step 6: Final answer
    x = 707,015.42

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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.