Home / 991,421,045.28-1,368,153,474.72-545,374,804.32

Finding the Fourth Proportional to 991,421,045.28, 1,368,153,474.72 and 545,374,804.32

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Solution

The fourth proportional to 991,421,045.28, 1,368,153,474.72 and 545,374,804.32 is: 752,613,066.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,421,045.28 : 1,368,153,474.72 = 545,374,804.32 : x
  2. Step 2: Convert to fraction form
    991,421,045.28/1,368,153,474.72 = 545,374,804.32/x
  3. Step 3: Cross multiply
    991,421,045.28x = 1,368,153,474.72 × 545,374,804.32
  4. Step 4: Simplify right side
    991,421,045.28x = 746,156,433,555,148,160
  5. Step 5: Solve for x
    x = 746,156,433,555,148,160/991,421,045.28
  6. Step 6: Final answer
    x = 752,613,066.98

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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.