Home / 521,640,280.80-782,460,421.20-368,585,272.80

Finding the Fourth Proportional to 521,640,280.80, 782,460,421.20 and 368,585,272.80

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Solution

The fourth proportional to 521,640,280.80, 782,460,421.20 and 368,585,272.80 is: 552,877,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,640,280.80 : 782,460,421.20 = 368,585,272.80 : x
  2. Step 2: Convert to fraction form
    521,640,280.80/782,460,421.20 = 368,585,272.80/x
  3. Step 3: Cross multiply
    521,640,280.80x = 782,460,421.20 × 368,585,272.80
  4. Step 4: Simplify right side
    521,640,280.80x = 288,403,387,803,204,928
  5. Step 5: Solve for x
    x = 288,403,387,803,204,928/521,640,280.80
  6. Step 6: Final answer
    x = 552,877,909.20

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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.