Home / 808,551,140.80-1,212,826,711.20-290,998,465.60

Finding the Fourth Proportional to 808,551,140.80, 1,212,826,711.20 and 290,998,465.60

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Solution

The fourth proportional to 808,551,140.80, 1,212,826,711.20 and 290,998,465.60 is: 436,497,698.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,551,140.80 : 1,212,826,711.20 = 290,998,465.60 : x
  2. Step 2: Convert to fraction form
    808,551,140.80/1,212,826,711.20 = 290,998,465.60/x
  3. Step 3: Cross multiply
    808,551,140.80x = 1,212,826,711.20 × 290,998,465.60
  4. Step 4: Simplify right side
    808,551,140.80x = 352,930,711,997,894,400
  5. Step 5: Solve for x
    x = 352,930,711,997,894,400/808,551,140.80
  6. Step 6: Final answer
    x = 436,497,698.40

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1.5x scale

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.