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Finding the Fourth Proportional to 418,753.86, 578,472.21 and 324,476.34

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Solution

The fourth proportional to 418,753.86, 578,472.21 and 324,476.34 is: 448,235.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,753.86 : 578,472.21 = 324,476.34 : x
  2. Step 2: Convert to fraction form
    418,753.86/578,472.21 = 324,476.34/x
  3. Step 3: Cross multiply
    418,753.86x = 578,472.21 × 324,476.34
  4. Step 4: Simplify right side
    418,753.86x = 187,700,545,492.51
  5. Step 5: Solve for x
    x = 187,700,545,492.51/418,753.86
  6. Step 6: Final answer
    x = 448,235.98

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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.