Home / 510,912,009.20-766,368,013.80-408,875,337.20

Finding the Fourth Proportional to 510,912,009.20, 766,368,013.80 and 408,875,337.20

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Solution

The fourth proportional to 510,912,009.20, 766,368,013.80 and 408,875,337.20 is: 613,313,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,912,009.20 : 766,368,013.80 = 408,875,337.20 : x
  2. Step 2: Convert to fraction form
    510,912,009.20/766,368,013.80 = 408,875,337.20/x
  3. Step 3: Cross multiply
    510,912,009.20x = 766,368,013.80 × 408,875,337.20
  4. Step 4: Simplify right side
    510,912,009.20x = 313,348,980,061,769,216
  5. Step 5: Solve for x
    x = 313,348,980,061,769,216/510,912,009.20
  6. Step 6: Final answer
    x = 613,313,005.80

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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.