Home / 728,903,176.65-1,005,914,928.87-411,374,514.15

Finding the Fourth Proportional to 728,903,176.65, 1,005,914,928.87 and 411,374,514.15

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Solution

The fourth proportional to 728,903,176.65, 1,005,914,928.87 and 411,374,514.15 is: 567,712,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,903,176.65 : 1,005,914,928.87 = 411,374,514.15 : x
  2. Step 2: Convert to fraction form
    728,903,176.65/1,005,914,928.87 = 411,374,514.15/x
  3. Step 3: Cross multiply
    728,903,176.65x = 1,005,914,928.87 × 411,374,514.15
  4. Step 4: Simplify right side
    728,903,176.65x = 413,807,765,140,128,064
  5. Step 5: Solve for x
    x = 413,807,765,140,128,064/728,903,176.65
  6. Step 6: Final answer
    x = 567,712,939.66

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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.