Home / 478,628,011.80-660,557,426.76-280,555,927.02

Finding the Fourth Proportional to 478,628,011.80, 660,557,426.76 and 280,555,927.02

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Solution

The fourth proportional to 478,628,011.80, 660,557,426.76 and 280,555,927.02 is: 387,196,939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,628,011.80 : 660,557,426.76 = 280,555,927.02 : x
  2. Step 2: Convert to fraction form
    478,628,011.80/660,557,426.76 = 280,555,927.02/x
  3. Step 3: Cross multiply
    478,628,011.80x = 660,557,426.76 × 280,555,927.02
  4. Step 4: Simplify right side
    478,628,011.80x = 185,323,301,214,597,536
  5. Step 5: Solve for x
    x = 185,323,301,214,597,536/478,628,011.80
  6. Step 6: Final answer
    x = 387,196,939.26

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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.