Home / 723,064,191.40-997,829,227.11-393,039,330.40

Finding the Fourth Proportional to 723,064,191.40, 997,829,227.11 and 393,039,330.40

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Solution

The fourth proportional to 723,064,191.40, 997,829,227.11 and 393,039,330.40 is: 542,394,625.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,064,191.40 : 997,829,227.11 = 393,039,330.40 : x
  2. Step 2: Convert to fraction form
    723,064,191.40/997,829,227.11 = 393,039,330.40/x
  3. Step 3: Cross multiply
    723,064,191.40x = 997,829,227.11 × 393,039,330.40
  4. Step 4: Simplify right side
    723,064,191.40x = 392,186,131,276,863,936
  5. Step 5: Solve for x
    x = 392,186,131,276,863,936/723,064,191.40
  6. Step 6: Final answer
    x = 542,394,625.46

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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.