Home / 528,293,528.98-728,881,581.58-305,193,808.45

Finding the Fourth Proportional to 528,293,528.98, 728,881,581.58 and 305,193,808.45

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Solution

The fourth proportional to 528,293,528.98, 728,881,581.58 and 305,193,808.45 is: 421,073,008.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,293,528.98 : 728,881,581.58 = 305,193,808.45 : x
  2. Step 2: Convert to fraction form
    528,293,528.98/728,881,581.58 = 305,193,808.45/x
  3. Step 3: Cross multiply
    528,293,528.98x = 728,881,581.58 × 305,193,808.45
  4. Step 4: Simplify right side
    528,293,528.98x = 222,450,145,791,459,584
  5. Step 5: Solve for x
    x = 222,450,145,791,459,584/528,293,528.98
  6. Step 6: Final answer
    x = 421,073,008.83

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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.