Home / 897,636,755.70-1,238,644,314.45-521,219,763.54

Finding the Fourth Proportional to 897,636,755.70, 1,238,644,314.45 and 521,219,763.54

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Solution

The fourth proportional to 897,636,755.70, 1,238,644,314.45 and 521,219,763.54 is: 719,228,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,636,755.70 : 1,238,644,314.45 = 521,219,763.54 : x
  2. Step 2: Convert to fraction form
    897,636,755.70/1,238,644,314.45 = 521,219,763.54/x
  3. Step 3: Cross multiply
    897,636,755.70x = 1,238,644,314.45 × 521,219,763.54
  4. Step 4: Simplify right side
    897,636,755.70x = 645,605,896,687,794,432
  5. Step 5: Solve for x
    x = 645,605,896,687,794,432/897,636,755.70
  6. Step 6: Final answer
    x = 719,228,454.70

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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.