Home / 868,838,906.10-1,303,258,359.15-402,499,428.60

Finding the Fourth Proportional to 868,838,906.10, 1,303,258,359.15 and 402,499,428.60

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Solution

The fourth proportional to 868,838,906.10, 1,303,258,359.15 and 402,499,428.60 is: 603,749,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,838,906.10 : 1,303,258,359.15 = 402,499,428.60 : x
  2. Step 2: Convert to fraction form
    868,838,906.10/1,303,258,359.15 = 402,499,428.60/x
  3. Step 3: Cross multiply
    868,838,906.10x = 1,303,258,359.15 × 402,499,428.60
  4. Step 4: Simplify right side
    868,838,906.10x = 524,560,744,876,048,640
  5. Step 5: Solve for x
    x = 524,560,744,876,048,640/868,838,906.10
  6. Step 6: Final answer
    x = 603,749,142.90

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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.