Home / 723,064,192.40-997,829,228.49-393,039,331.40

Finding the Fourth Proportional to 723,064,192.40, 997,829,228.49 and 393,039,331.40

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Solution

The fourth proportional to 723,064,192.40, 997,829,228.49 and 393,039,331.40 is: 542,394,626.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,064,192.40 : 997,829,228.49 = 393,039,331.40 : x
  2. Step 2: Convert to fraction form
    723,064,192.40/997,829,228.49 = 393,039,331.40/x
  3. Step 3: Cross multiply
    723,064,192.40x = 997,829,228.49 × 393,039,331.40
  4. Step 4: Simplify right side
    723,064,192.40x = 392,186,132,817,087,424
  5. Step 5: Solve for x
    x = 392,186,132,817,087,424/723,064,192.40
  6. Step 6: Final answer
    x = 542,394,626.84

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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.