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Finding the Fourth Proportional to 659,685.12, 910,451.32 and 369,407.22

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Solution

The fourth proportional to 659,685.12, 910,451.32 and 369,407.22 is: 509,830.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,685.12 : 910,451.32 = 369,407.22 : x
  2. Step 2: Convert to fraction form
    659,685.12/910,451.32 = 369,407.22/x
  3. Step 3: Cross multiply
    659,685.12x = 910,451.32 × 369,407.22
  4. Step 4: Simplify right side
    659,685.12x = 336,327,293,928.02
  5. Step 5: Solve for x
    x = 336,327,293,928.02/659,685.12
  6. Step 6: Final answer
    x = 509,830.05

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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.