Home / 718,559,833.82-991,625,485.29-421,416,389.84

Finding the Fourth Proportional to 718,559,833.82, 991,625,485.29 and 421,416,389.84

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Solution

The fourth proportional to 718,559,833.82, 991,625,485.29 and 421,416,389.84 is: 581,562,192.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,559,833.82 : 991,625,485.29 = 421,416,389.84 : x
  2. Step 2: Convert to fraction form
    718,559,833.82/991,625,485.29 = 421,416,389.84/x
  3. Step 3: Cross multiply
    718,559,833.82x = 991,625,485.29 × 421,416,389.84
  4. Step 4: Simplify right side
    718,559,833.82x = 417,887,232,084,249,792
  5. Step 5: Solve for x
    x = 417,887,232,084,249,792/718,559,833.82
  6. Step 6: Final answer
    x = 581,562,192.06

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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.