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Finding the Fourth Proportional to 908,726.72, 1,254,051.12 and 500,843.12

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Solution

The fourth proportional to 908,726.72, 1,254,051.12 and 500,843.12 is: 691,168.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,726.72 : 1,254,051.12 = 500,843.12 : x
  2. Step 2: Convert to fraction form
    908,726.72/1,254,051.12 = 500,843.12/x
  3. Step 3: Cross multiply
    908,726.72x = 1,254,051.12 × 500,843.12
  4. Step 4: Simplify right side
    908,726.72x = 628,082,875,580.29
  5. Step 5: Solve for x
    x = 628,082,875,580.29/908,726.72
  6. Step 6: Final answer
    x = 691,168.05

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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.