Home / 328,744,905.80-492,173,640.30-319,307,721.80

Finding the Fourth Proportional to 328,744,905.80, 492,173,640.30 and 319,307,721.80

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Solution

The fourth proportional to 328,744,905.80, 492,173,640.30 and 319,307,721.80 is: 478,044,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,744,905.80 : 492,173,640.30 = 319,307,721.80 : x
  2. Step 2: Convert to fraction form
    328,744,905.80/492,173,640.30 = 319,307,721.80/x
  3. Step 3: Cross multiply
    328,744,905.80x = 492,173,640.30 × 319,307,721.80
  4. Step 4: Simplify right side
    328,744,905.80x = 157,154,843,814,205,664
  5. Step 5: Solve for x
    x = 157,154,843,814,205,664/328,744,905.80
  6. Step 6: Final answer
    x = 478,044,955.35

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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.