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Finding the Fourth Proportional to 991,547,523.57, 1,368,335,520 and 545,501,317.84

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Solution

The fourth proportional to 991,547,523.57, 1,368,335,520 and 545,501,317.84 is: 752,791,784.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,547,523.57 : 1,368,335,520 = 545,501,317.84 : x
  2. Step 2: Convert to fraction form
    991,547,523.57/1,368,335,520 = 545,501,317.84/x
  3. Step 3: Cross multiply
    991,547,523.57x = 1,368,335,520 × 545,501,317.84
  4. Step 4: Simplify right side
    991,547,523.57x = 746,428,829,403,860,864
  5. Step 5: Solve for x
    x = 746,428,829,403,860,864/991,547,523.57
  6. Step 6: Final answer
    x = 752,791,784.22

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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.