Home / 868,969,715.60-1,303,454,573.40-323,640,390.80

Finding the Fourth Proportional to 868,969,715.60, 1,303,454,573.40 and 323,640,390.80

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Solution

The fourth proportional to 868,969,715.60, 1,303,454,573.40 and 323,640,390.80 is: 485,460,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,969,715.60 : 1,303,454,573.40 = 323,640,390.80 : x
  2. Step 2: Convert to fraction form
    868,969,715.60/1,303,454,573.40 = 323,640,390.80/x
  3. Step 3: Cross multiply
    868,969,715.60x = 1,303,454,573.40 × 323,640,390.80
  4. Step 4: Simplify right side
    868,969,715.60x = 421,850,547,525,223,360
  5. Step 5: Solve for x
    x = 421,850,547,525,223,360/868,969,715.60
  6. Step 6: Final answer
    x = 485,460,586.20

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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.