Home / 721,607,136.40-995,817,848.34-391,582,275.40

Finding the Fourth Proportional to 721,607,136.40, 995,817,848.34 and 391,582,275.40

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Solution

The fourth proportional to 721,607,136.40, 995,817,848.34 and 391,582,275.40 is: 540,383,540.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,607,136.40 : 995,817,848.34 = 391,582,275.40 : x
  2. Step 2: Convert to fraction form
    721,607,136.40/995,817,848.34 = 391,582,275.40/x
  3. Step 3: Cross multiply
    721,607,136.40x = 995,817,848.34 × 391,582,275.40
  4. Step 4: Simplify right side
    721,607,136.40x = 389,944,618,936,909,312
  5. Step 5: Solve for x
    x = 389,944,618,936,909,312/721,607,136.40
  6. Step 6: Final answer
    x = 540,383,540.11

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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.