Home / 810,875,128.11-1,119,091,080.12-493,357,915.56

Finding the Fourth Proportional to 810,875,128.11, 1,119,091,080.12 and 493,357,915.56

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Solution

The fourth proportional to 810,875,128.11, 1,119,091,080.12 and 493,357,915.56 is: 680,884,668.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,875,128.11 : 1,119,091,080.12 = 493,357,915.56 : x
  2. Step 2: Convert to fraction form
    810,875,128.11/1,119,091,080.12 = 493,357,915.56/x
  3. Step 3: Cross multiply
    810,875,128.11x = 1,119,091,080.12 × 493,357,915.56
  4. Step 4: Simplify right side
    810,875,128.11x = 552,112,442,609,792,128
  5. Step 5: Solve for x
    x = 552,112,442,609,792,128/810,875,128.11
  6. Step 6: Final answer
    x = 680,884,668.27

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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.