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Finding the Fourth Proportional to 695,280,652.20, 1,042,920,978.30 and 684,531,109.80

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Solution

The fourth proportional to 695,280,652.20, 1,042,920,978.30 and 684,531,109.80 is: 1,026,796,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,280,652.20 : 1,042,920,978.30 = 684,531,109.80 : x
  2. Step 2: Convert to fraction form
    695,280,652.20/1,042,920,978.30 = 684,531,109.80/x
  3. Step 3: Cross multiply
    695,280,652.20x = 1,042,920,978.30 × 684,531,109.80
  4. Step 4: Simplify right side
    695,280,652.20x = 713,911,854,709,400,576
  5. Step 5: Solve for x
    x = 713,911,854,709,400,576/695,280,652.20
  6. Step 6: Final answer
    x = 1,026,796,664.70

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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.