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Finding the Fourth Proportional to 665,067,030.30, 997,600,545.45 and 648,060,918.30

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Solution

The fourth proportional to 665,067,030.30, 997,600,545.45 and 648,060,918.30 is: 972,091,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,067,030.30 : 997,600,545.45 = 648,060,918.30 : x
  2. Step 2: Convert to fraction form
    665,067,030.30/997,600,545.45 = 648,060,918.30/x
  3. Step 3: Cross multiply
    665,067,030.30x = 997,600,545.45 × 648,060,918.30
  4. Step 4: Simplify right side
    665,067,030.30x = 646,505,925,580,907,904
  5. Step 5: Solve for x
    x = 646,505,925,580,907,904/665,067,030.30
  6. Step 6: Final answer
    x = 972,091,377.45

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Double scale
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Similar ratio
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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.