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Finding the Fourth Proportional to 666,894.38, 920,314.28 and 365,088.38

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Solution

The fourth proportional to 666,894.38, 920,314.28 and 365,088.38 is: 503,821.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,894.38 : 920,314.28 = 365,088.38 : x
  2. Step 2: Convert to fraction form
    666,894.38/920,314.28 = 365,088.38/x
  3. Step 3: Cross multiply
    666,894.38x = 920,314.28 × 365,088.38
  4. Step 4: Simplify right side
    666,894.38x = 335,996,045,887.22
  5. Step 5: Solve for x
    x = 335,996,045,887.22/666,894.38
  6. Step 6: Final answer
    x = 503,821.98

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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.