Home / 521,615,085.12-719,846,075.68-286,674,073.28

Finding the Fourth Proportional to 521,615,085.12, 719,846,075.68 and 286,674,073.28

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Solution

The fourth proportional to 521,615,085.12, 719,846,075.68 and 286,674,073.28 is: 395,619,706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,615,085.12 : 719,846,075.68 = 286,674,073.28 : x
  2. Step 2: Convert to fraction form
    521,615,085.12/719,846,075.68 = 286,674,073.28/x
  3. Step 3: Cross multiply
    521,615,085.12x = 719,846,075.68 × 286,674,073.28
  4. Step 4: Simplify right side
    521,615,085.12x = 206,361,206,649,808,704
  5. Step 5: Solve for x
    x = 206,361,206,649,808,704/521,615,085.12
  6. Step 6: Final answer
    x = 395,619,706.06

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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.