Home / 869,822,400.12-1,200,355,108.88-478,681,824.12

Finding the Fourth Proportional to 869,822,400.12, 1,200,355,108.88 and 478,681,824.12

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Solution

The fourth proportional to 869,822,400.12, 1,200,355,108.88 and 478,681,824.12 is: 660,581,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,822,400.12 : 1,200,355,108.88 = 478,681,824.12 : x
  2. Step 2: Convert to fraction form
    869,822,400.12/1,200,355,108.88 = 478,681,824.12/x
  3. Step 3: Cross multiply
    869,822,400.12x = 1,200,355,108.88 × 478,681,824.12
  4. Step 4: Simplify right side
    869,822,400.12x = 574,588,173,110,439,680
  5. Step 5: Solve for x
    x = 574,588,173,110,439,680/869,822,400.12
  6. Step 6: Final answer
    x = 660,581,025.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.