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Finding the Fourth Proportional to 610,416,628.80, 915,680,930.40 and 201,473,678.40

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Solution

The fourth proportional to 610,416,628.80, 915,680,930.40 and 201,473,678.40 is: 302,228,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,416,628.80 : 915,680,930.40 = 201,473,678.40 : x
  2. Step 2: Convert to fraction form
    610,416,628.80/915,680,930.40 = 201,473,678.40/x
  3. Step 3: Cross multiply
    610,416,628.80x = 915,680,930.40 × 201,473,678.40
  4. Step 4: Simplify right side
    610,416,628.80x = 184,485,605,288,422,400
  5. Step 5: Solve for x
    x = 184,485,605,288,422,400/610,416,628.80
  6. Step 6: Final answer
    x = 302,228,996.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.