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Finding the Fourth Proportional to 525,982,474.80, 788,973,712.20 and 219,494,545.20

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Solution

The fourth proportional to 525,982,474.80, 788,973,712.20 and 219,494,545.20 is: 329,241,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,982,474.80 : 788,973,712.20 = 219,494,545.20 : x
  2. Step 2: Convert to fraction form
    525,982,474.80/788,973,712.20 = 219,494,545.20/x
  3. Step 3: Cross multiply
    525,982,474.80x = 788,973,712.20 × 219,494,545.20
  4. Step 4: Simplify right side
    525,982,474.80x = 173,175,426,134,094,688
  5. Step 5: Solve for x
    x = 173,175,426,134,094,688/525,982,474.80
  6. Step 6: Final answer
    x = 329,241,817.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.