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Finding the Fourth Proportional to 667,393.84, 920,265.51 and 425,292.94

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Solution

The fourth proportional to 667,393.84, 920,265.51 and 425,292.94 is: 586,433.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,393.84 : 920,265.51 = 425,292.94 : x
  2. Step 2: Convert to fraction form
    667,393.84/920,265.51 = 425,292.94/x
  3. Step 3: Cross multiply
    667,393.84x = 920,265.51 × 425,292.94
  4. Step 4: Simplify right side
    667,393.84x = 391,382,424,328.50
  5. Step 5: Solve for x
    x = 391,382,424,328.50/667,393.84
  6. Step 6: Final answer
    x = 586,433.98

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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.