Home / 1,044,128.30-1,566,192.45-778,407.80

Finding the Fourth Proportional to 1,044,128.30, 1,566,192.45 and 778,407.80

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Solution

The fourth proportional to 1,044,128.30, 1,566,192.45 and 778,407.80 is: 1,167,611.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044,128.30 : 1,566,192.45 = 778,407.80 : x
  2. Step 2: Convert to fraction form
    1,044,128.30/1,566,192.45 = 778,407.80/x
  3. Step 3: Cross multiply
    1,044,128.30x = 1,566,192.45 × 778,407.80
  4. Step 4: Simplify right side
    1,044,128.30x = 1,219,136,419,381.11
  5. Step 5: Solve for x
    x = 1,219,136,419,381.11/1,044,128.30
  6. Step 6: Final answer
    x = 1,167,611.70

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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.