Home / 656,890.81-906,521.12-385,035.77

Finding the Fourth Proportional to 656,890.81, 906,521.12 and 385,035.77

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Solution

The fourth proportional to 656,890.81, 906,521.12 and 385,035.77 is: 531,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,890.81 : 906,521.12 = 385,035.77 : x
  2. Step 2: Convert to fraction form
    656,890.81/906,521.12 = 385,035.77/x
  3. Step 3: Cross multiply
    656,890.81x = 906,521.12 × 385,035.77
  4. Step 4: Simplify right side
    656,890.81x = 349,043,057,460.46
  5. Step 5: Solve for x
    x = 349,043,057,460.46/656,890.81
  6. Step 6: Final answer
    x = 531,356.28

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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.