Home / 554,955,512.90-765,885,637.05-307,514,483.78

Finding the Fourth Proportional to 554,955,512.90, 765,885,637.05 and 307,514,483.78

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Solution

The fourth proportional to 554,955,512.90, 765,885,637.05 and 307,514,483.78 is: 424,396,047.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,955,512.90 : 765,885,637.05 = 307,514,483.78 : x
  2. Step 2: Convert to fraction form
    554,955,512.90/765,885,637.05 = 307,514,483.78/x
  3. Step 3: Cross multiply
    554,955,512.90x = 765,885,637.05 × 307,514,483.78
  4. Step 4: Simplify right side
    554,955,512.90x = 235,520,926,311,947,168
  5. Step 5: Solve for x
    x = 235,520,926,311,947,168/554,955,512.90
  6. Step 6: Final answer
    x = 424,396,047.68

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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.