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Finding the Fourth Proportional to 708,573.58, 977,802.46 and 398,467.31

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Solution

The fourth proportional to 708,573.58, 977,802.46 and 398,467.31 is: 549,868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,573.58 : 977,802.46 = 398,467.31 : x
  2. Step 2: Convert to fraction form
    708,573.58/977,802.46 = 398,467.31/x
  3. Step 3: Cross multiply
    708,573.58x = 977,802.46 × 398,467.31
  4. Step 4: Simplify right side
    708,573.58x = 389,622,310,062.40
  5. Step 5: Solve for x
    x = 389,622,310,062.40/708,573.58
  6. Step 6: Final answer
    x = 549,868.53

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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.