Home / 521,640,034.20-782,460,051.30-391,543,277.40

Finding the Fourth Proportional to 521,640,034.20, 782,460,051.30 and 391,543,277.40

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Solution

The fourth proportional to 521,640,034.20, 782,460,051.30 and 391,543,277.40 is: 587,314,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,640,034.20 : 782,460,051.30 = 391,543,277.40 : x
  2. Step 2: Convert to fraction form
    521,640,034.20/782,460,051.30 = 391,543,277.40/x
  3. Step 3: Cross multiply
    521,640,034.20x = 782,460,051.30 × 391,543,277.40
  4. Step 4: Simplify right side
    521,640,034.20x = 306,366,972,920,574,080
  5. Step 5: Solve for x
    x = 306,366,972,920,574,080/521,640,034.20
  6. Step 6: Final answer
    x = 587,314,916.10

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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.