Home / 710,705,680.12-980,755,416.66-393,177,653.56

Finding the Fourth Proportional to 710,705,680.12, 980,755,416.66 and 393,177,653.56

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Solution

The fourth proportional to 710,705,680.12, 980,755,416.66 and 393,177,653.56 is: 542,574,970.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,705,680.12 : 980,755,416.66 = 393,177,653.56 : x
  2. Step 2: Convert to fraction form
    710,705,680.12/980,755,416.66 = 393,177,653.56/x
  3. Step 3: Cross multiply
    710,705,680.12x = 980,755,416.66 × 393,177,653.56
  4. Step 4: Simplify right side
    710,705,680.12x = 385,611,113,438,638,912
  5. Step 5: Solve for x
    x = 385,611,113,438,638,912/710,705,680.12
  6. Step 6: Final answer
    x = 542,574,970.52

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1.5x scale

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.