Home / 710,705,679.12-980,755,415.28-393,177,652.56

Finding the Fourth Proportional to 710,705,679.12, 980,755,415.28 and 393,177,652.56

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Solution

The fourth proportional to 710,705,679.12, 980,755,415.28 and 393,177,652.56 is: 542,574,969.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,705,679.12 : 980,755,415.28 = 393,177,652.56 : x
  2. Step 2: Convert to fraction form
    710,705,679.12/980,755,415.28 = 393,177,652.56/x
  3. Step 3: Cross multiply
    710,705,679.12x = 980,755,415.28 × 393,177,652.56
  4. Step 4: Simplify right side
    710,705,679.12x = 385,611,111,915,298,368
  5. Step 5: Solve for x
    x = 385,611,111,915,298,368/710,705,679.12
  6. Step 6: Final answer
    x = 542,574,969.14

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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.