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Finding the Fourth Proportional to 708,166.58, 977,239.33 and 402,242.01

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Solution

The fourth proportional to 708,166.58, 977,239.33 and 402,242.01 is: 555,076.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,166.58 : 977,239.33 = 402,242.01 : x
  2. Step 2: Convert to fraction form
    708,166.58/977,239.33 = 402,242.01/x
  3. Step 3: Cross multiply
    708,166.58x = 977,239.33 × 402,242.01
  4. Step 4: Simplify right side
    708,166.58x = 393,086,716,517.70
  5. Step 5: Solve for x
    x = 393,086,716,517.70/708,166.58
  6. Step 6: Final answer
    x = 555,076.63

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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.