Home / 287,424,393.60-431,136,590.40-82,959,139.20

Finding the Fourth Proportional to 287,424,393.60, 431,136,590.40 and 82,959,139.20

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Solution

The fourth proportional to 287,424,393.60, 431,136,590.40 and 82,959,139.20 is: 124,438,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,424,393.60 : 431,136,590.40 = 82,959,139.20 : x
  2. Step 2: Convert to fraction form
    287,424,393.60/431,136,590.40 = 82,959,139.20/x
  3. Step 3: Cross multiply
    287,424,393.60x = 431,136,590.40 × 82,959,139.20
  4. Step 4: Simplify right side
    287,424,393.60x = 35,766,720,417,206,984
  5. Step 5: Solve for x
    x = 35,766,720,417,206,984/287,424,393.60
  6. Step 6: Final answer
    x = 124,438,708.80

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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.