Home / 818,037,154.17-1,128,892,535.78-465,613,141.23

Finding the Fourth Proportional to 818,037,154.17, 1,128,892,535.78 and 465,613,141.23

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Solution

The fourth proportional to 818,037,154.17, 1,128,892,535.78 and 465,613,141.23 is: 642,546,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,037,154.17 : 1,128,892,535.78 = 465,613,141.23 : x
  2. Step 2: Convert to fraction form
    818,037,154.17/1,128,892,535.78 = 465,613,141.23/x
  3. Step 3: Cross multiply
    818,037,154.17x = 1,128,892,535.78 × 465,613,141.23
  4. Step 4: Simplify right side
    818,037,154.17x = 525,627,199,695,625,984
  5. Step 5: Solve for x
    x = 525,627,199,695,625,984/818,037,154.17
  6. Step 6: Final answer
    x = 642,546,853.79

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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.