Home / 885,120,688.20-1,328,688,801.90-521,819,747.40

Finding the Fourth Proportional to 885,120,688.20, 1,328,688,801.90 and 521,819,747.40

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Solution

The fourth proportional to 885,120,688.20, 1,328,688,801.90 and 521,819,747.40 is: 783,323,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,120,688.20 : 1,328,688,801.90 = 521,819,747.40 : x
  2. Step 2: Convert to fraction form
    885,120,688.20/1,328,688,801.90 = 521,819,747.40/x
  3. Step 3: Cross multiply
    885,120,688.20x = 1,328,688,801.90 × 521,819,747.40
  4. Step 4: Simplify right side
    885,120,688.20x = 693,336,054,980,666,624
  5. Step 5: Solve for x
    x = 693,336,054,980,666,624/885,120,688.20
  6. Step 6: Final answer
    x = 783,323,748.08

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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.