Home / 869,822,929.80-1,200,355,840.98-478,682,353.80

Finding the Fourth Proportional to 869,822,929.80, 1,200,355,840.98 and 478,682,353.80

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Solution

The fourth proportional to 869,822,929.80, 1,200,355,840.98 and 478,682,353.80 is: 660,581,757.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,822,929.80 : 1,200,355,840.98 = 478,682,353.80 : x
  2. Step 2: Convert to fraction form
    869,822,929.80/1,200,355,840.98 = 478,682,353.80/x
  3. Step 3: Cross multiply
    869,822,929.80x = 1,200,355,840.98 × 478,682,353.80
  4. Step 4: Simplify right side
    869,822,929.80x = 574,589,159,357,884,928
  5. Step 5: Solve for x
    x = 574,589,159,357,884,928/869,822,929.80
  6. Step 6: Final answer
    x = 660,581,757.13

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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.