Home / 679,119.91-936,981.10-407,088.55

Finding the Fourth Proportional to 679,119.91, 936,981.10 and 407,088.55

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Solution

The fourth proportional to 679,119.91, 936,981.10 and 407,088.55 is: 561,659.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,119.91 : 936,981.10 = 407,088.55 : x
  2. Step 2: Convert to fraction form
    679,119.91/936,981.10 = 407,088.55/x
  3. Step 3: Cross multiply
    679,119.91x = 936,981.10 × 407,088.55
  4. Step 4: Simplify right side
    679,119.91x = 381,434,270,656.06
  5. Step 5: Solve for x
    x = 381,434,270,656.06/679,119.91
  6. Step 6: Final answer
    x = 561,659.68

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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.