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Finding the Fourth Proportional to 659,407.12, 910,020.18 and 369,016.22

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Solution

The fourth proportional to 659,407.12, 910,020.18 and 369,016.22 is: 509,263.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,407.12 : 910,020.18 = 369,016.22 : x
  2. Step 2: Convert to fraction form
    659,407.12/910,020.18 = 369,016.22/x
  3. Step 3: Cross multiply
    659,407.12x = 910,020.18 × 369,016.22
  4. Step 4: Simplify right side
    659,407.12x = 335,812,206,947.32
  5. Step 5: Solve for x
    x = 335,812,206,947.32/659,407.12
  6. Step 6: Final answer
    x = 509,263.85

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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.