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Finding the Fourth Proportional to 659,949.36, 910,730.72 and 358,143.36

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Solution

The fourth proportional to 659,949.36, 910,730.72 and 358,143.36 is: 494,238.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,949.36 : 910,730.72 = 358,143.36 : x
  2. Step 2: Convert to fraction form
    659,949.36/910,730.72 = 358,143.36/x
  3. Step 3: Cross multiply
    659,949.36x = 910,730.72 × 358,143.36
  4. Step 4: Simplify right side
    659,949.36x = 326,172,160,116.02
  5. Step 5: Solve for x
    x = 326,172,160,116.02/659,949.36
  6. Step 6: Final answer
    x = 494,238.16

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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.