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Finding the Fourth Proportional to 660,006.64, 910,809.53 and 358,200.64

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Solution

The fourth proportional to 660,006.64, 910,809.53 and 358,200.64 is: 494,317.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,006.64 : 910,809.53 = 358,200.64 : x
  2. Step 2: Convert to fraction form
    660,006.64/910,809.53 = 358,200.64/x
  3. Step 3: Cross multiply
    660,006.64x = 910,809.53 × 358,200.64
  4. Step 4: Simplify right side
    660,006.64x = 326,252,556,564.10
  5. Step 5: Solve for x
    x = 326,252,556,564.10/660,006.64
  6. Step 6: Final answer
    x = 494,317.08

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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.