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Finding the Fourth Proportional to 660,046.40, 910,863.84 and 358,240.32

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Solution

The fourth proportional to 660,046.40, 910,863.84 and 358,240.32 is: 494,371.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,046.40 : 910,863.84 = 358,240.32 : x
  2. Step 2: Convert to fraction form
    660,046.40/910,863.84 = 358,240.32/x
  3. Step 3: Cross multiply
    660,046.40x = 910,863.84 × 358,240.32
  4. Step 4: Simplify right side
    660,046.40x = 326,308,153,518.03
  5. Step 5: Solve for x
    x = 326,308,153,518.03/660,046.40
  6. Step 6: Final answer
    x = 494,371.54

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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.