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Finding the Fourth Proportional to 917,070.60, 1,375,605.90 and 497,166.60

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Solution

The fourth proportional to 917,070.60, 1,375,605.90 and 497,166.60 is: 745,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,070.60 : 1,375,605.90 = 497,166.60 : x
  2. Step 2: Convert to fraction form
    917,070.60/1,375,605.90 = 497,166.60/x
  3. Step 3: Cross multiply
    917,070.60x = 1,375,605.90 × 497,166.60
  4. Step 4: Simplify right side
    917,070.60x = 683,905,308,242.94
  5. Step 5: Solve for x
    x = 683,905,308,242.94/917,070.60
  6. Step 6: Final answer
    x = 745,749.90

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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.