Home / 869,822,391.60-1,200,355,097.10-478,681,815.60

Finding the Fourth Proportional to 869,822,391.60, 1,200,355,097.10 and 478,681,815.60

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Solution

The fourth proportional to 869,822,391.60, 1,200,355,097.10 and 478,681,815.60 is: 660,581,013.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,822,391.60 : 1,200,355,097.10 = 478,681,815.60 : x
  2. Step 2: Convert to fraction form
    869,822,391.60/1,200,355,097.10 = 478,681,815.60/x
  3. Step 3: Cross multiply
    869,822,391.60x = 1,200,355,097.10 × 478,681,815.60
  4. Step 4: Simplify right side
    869,822,391.60x = 574,588,157,244,542,272
  5. Step 5: Solve for x
    x = 574,588,157,244,542,272/869,822,391.60
  6. Step 6: Final answer
    x = 660,581,013.77

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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.