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Finding the Fourth Proportional to 659,935.42, 910,710.86 and 358,129.42

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Solution

The fourth proportional to 659,935.42, 910,710.86 and 358,129.42 is: 494,218.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,935.42 : 910,710.86 = 358,129.42 : x
  2. Step 2: Convert to fraction form
    659,935.42/910,710.86 = 358,129.42/x
  3. Step 3: Cross multiply
    659,935.42x = 910,710.86 × 358,129.42
  4. Step 4: Simplify right side
    659,935.42x = 326,152,348,012.08
  5. Step 5: Solve for x
    x = 326,152,348,012.08/659,935.42
  6. Step 6: Final answer
    x = 494,218.58

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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.