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Finding the Fourth Proportional to 657,130.90, 984,529.95 and 407,521.30

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Solution

The fourth proportional to 657,130.90, 984,529.95 and 407,521.30 is: 610,558.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,130.90 : 984,529.95 = 407,521.30 : x
  2. Step 2: Convert to fraction form
    657,130.90/984,529.95 = 407,521.30/x
  3. Step 3: Cross multiply
    657,130.90x = 984,529.95 × 407,521.30
  4. Step 4: Simplify right side
    657,130.90x = 401,216,925,112.94
  5. Step 5: Solve for x
    x = 401,216,925,112.94/657,130.90
  6. Step 6: Final answer
    x = 610,558.60

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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.