Home / 812,870,762.40-1,219,306,143.60-425,450,273.40

Finding the Fourth Proportional to 812,870,762.40, 1,219,306,143.60 and 425,450,273.40

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Solution

The fourth proportional to 812,870,762.40, 1,219,306,143.60 and 425,450,273.40 is: 638,175,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,870,762.40 : 1,219,306,143.60 = 425,450,273.40 : x
  2. Step 2: Convert to fraction form
    812,870,762.40/1,219,306,143.60 = 425,450,273.40/x
  3. Step 3: Cross multiply
    812,870,762.40x = 1,219,306,143.60 × 425,450,273.40
  4. Step 4: Simplify right side
    812,870,762.40x = 518,754,132,152,919,616
  5. Step 5: Solve for x
    x = 518,754,132,152,919,616/812,870,762.40
  6. Step 6: Final answer
    x = 638,175,410.10

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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.