Home / 923,931.71-1,385,656.99-391,178.51

Finding the Fourth Proportional to 923,931.71, 1,385,656.99 and 391,178.51

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Solution

The fourth proportional to 923,931.71, 1,385,656.99 and 391,178.51 is: 586,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,931.71 : 1,385,656.99 = 391,178.51 : x
  2. Step 2: Convert to fraction form
    923,931.71/1,385,656.99 = 391,178.51/x
  3. Step 3: Cross multiply
    923,931.71x = 1,385,656.99 × 391,178.51
  4. Step 4: Simplify right side
    923,931.71x = 542,039,228,813.05
  5. Step 5: Solve for x
    x = 542,039,228,813.05/923,931.71
  6. Step 6: Final answer
    x = 586,665.90

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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.