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Finding the Fourth Proportional to 659,875.50, 910,630.62 and 358,069.50

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Solution

The fourth proportional to 659,875.50, 910,630.62 and 358,069.50 is: 494,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,875.50 : 910,630.62 = 358,069.50 : x
  2. Step 2: Convert to fraction form
    659,875.50/910,630.62 = 358,069.50/x
  3. Step 3: Cross multiply
    659,875.50x = 910,630.62 × 358,069.50
  4. Step 4: Simplify right side
    659,875.50x = 326,069,050,788.09
  5. Step 5: Solve for x
    x = 326,069,050,788.09/659,875.50
  6. Step 6: Final answer
    x = 494,137.23

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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.