Home / 869,822,904.30-1,200,355,805.79-478,682,328.30

Finding the Fourth Proportional to 869,822,904.30, 1,200,355,805.79 and 478,682,328.30

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Solution

The fourth proportional to 869,822,904.30, 1,200,355,805.79 and 478,682,328.30 is: 660,581,721.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,822,904.30 : 1,200,355,805.79 = 478,682,328.30 : x
  2. Step 2: Convert to fraction form
    869,822,904.30/1,200,355,805.79 = 478,682,328.30/x
  3. Step 3: Cross multiply
    869,822,904.30x = 1,200,355,805.79 × 478,682,328.30
  4. Step 4: Simplify right side
    869,822,904.30x = 574,589,111,903,979,840
  5. Step 5: Solve for x
    x = 574,589,111,903,979,840/869,822,904.30
  6. Step 6: Final answer
    x = 660,581,721.94

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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.