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Finding the Fourth Proportional to 525,915,237.58, 725,736,472.06 and 287,755,267.84

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Solution

The fourth proportional to 525,915,237.58, 725,736,472.06 and 287,755,267.84 is: 397,087,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,915,237.58 : 725,736,472.06 = 287,755,267.84 : x
  2. Step 2: Convert to fraction form
    525,915,237.58/725,736,472.06 = 287,755,267.84/x
  3. Step 3: Cross multiply
    525,915,237.58x = 725,736,472.06 × 287,755,267.84
  4. Step 4: Simplify right side
    525,915,237.58x = 208,834,492,898,881,952
  5. Step 5: Solve for x
    x = 208,834,492,898,881,952/525,915,237.58
  6. Step 6: Final answer
    x = 397,087,739.58

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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.