Home / 821,389.77-1,133,484.71-458,807.85

Finding the Fourth Proportional to 821,389.77, 1,133,484.71 and 458,807.85

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Solution

The fourth proportional to 821,389.77, 1,133,484.71 and 458,807.85 is: 633,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,389.77 : 1,133,484.71 = 458,807.85 : x
  2. Step 2: Convert to fraction form
    821,389.77/1,133,484.71 = 458,807.85/x
  3. Step 3: Cross multiply
    821,389.77x = 1,133,484.71 × 458,807.85
  4. Step 4: Simplify right side
    821,389.77x = 520,051,680,508.93
  5. Step 5: Solve for x
    x = 520,051,680,508.93/821,389.77
  6. Step 6: Final answer
    x = 633,136.30

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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.