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Finding the Fourth Proportional to 563,079.06, 777,070.53 and 321,400.98

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Solution

The fourth proportional to 563,079.06, 777,070.53 and 321,400.98 is: 443,545.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,079.06 : 777,070.53 = 321,400.98 : x
  2. Step 2: Convert to fraction form
    563,079.06/777,070.53 = 321,400.98/x
  3. Step 3: Cross multiply
    563,079.06x = 777,070.53 × 321,400.98
  4. Step 4: Simplify right side
    563,079.06x = 249,751,229,871.12
  5. Step 5: Solve for x
    x = 249,751,229,871.12/563,079.06
  6. Step 6: Final answer
    x = 443,545.58

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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.