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Finding the Fourth Proportional to 659,934.49, 910,710.17 and 358,128.49

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Solution

The fourth proportional to 659,934.49, 910,710.17 and 358,128.49 is: 494,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,934.49 : 910,710.17 = 358,128.49 : x
  2. Step 2: Convert to fraction form
    659,934.49/910,710.17 = 358,128.49/x
  3. Step 3: Cross multiply
    659,934.49x = 910,710.17 × 358,128.49
  4. Step 4: Simplify right side
    659,934.49x = 326,151,258,009.74
  5. Step 5: Solve for x
    x = 326,151,258,009.74/659,934.49
  6. Step 6: Final answer
    x = 494,217.63

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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.