Home / 1,287,133,046.20-1,930,699,569.30-425,490,038.20

Finding the Fourth Proportional to 1,287,133,046.20, 1,930,699,569.30 and 425,490,038.20

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Solution

The fourth proportional to 1,287,133,046.20, 1,930,699,569.30 and 425,490,038.20 is: 638,235,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,133,046.20 : 1,930,699,569.30 = 425,490,038.20 : x
  2. Step 2: Convert to fraction form
    1,287,133,046.20/1,930,699,569.30 = 425,490,038.20/x
  3. Step 3: Cross multiply
    1,287,133,046.20x = 1,930,699,569.30 × 425,490,038.20
  4. Step 4: Simplify right side
    1,287,133,046.20x = 821,493,433,494,180,480
  5. Step 5: Solve for x
    x = 821,493,433,494,180,480/1,287,133,046.20
  6. Step 6: Final answer
    x = 638,235,057.30

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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.