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Finding the Fourth Proportional to 667,054.60, 920,518.40 and 372,706.70

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Solution

The fourth proportional to 667,054.60, 920,518.40 and 372,706.70 is: 514,325.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,054.60 : 920,518.40 = 372,706.70 : x
  2. Step 2: Convert to fraction form
    667,054.60/920,518.40 = 372,706.70/x
  3. Step 3: Cross multiply
    667,054.60x = 920,518.40 × 372,706.70
  4. Step 4: Simplify right side
    667,054.60x = 343,083,371,482.46
  5. Step 5: Solve for x
    x = 343,083,371,482.46/667,054.60
  6. Step 6: Final answer
    x = 514,325.77

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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.