Home / 824,885,535.45-1,138,347,960.72-448,539,426.39

Finding the Fourth Proportional to 824,885,535.45, 1,138,347,960.72 and 448,539,426.39

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Solution

The fourth proportional to 824,885,535.45, 1,138,347,960.72 and 448,539,426.39 is: 618,987,628.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,885,535.45 : 1,138,347,960.72 = 448,539,426.39 : x
  2. Step 2: Convert to fraction form
    824,885,535.45/1,138,347,960.72 = 448,539,426.39/x
  3. Step 3: Cross multiply
    824,885,535.45x = 1,138,347,960.72 × 448,539,426.39
  4. Step 4: Simplify right side
    824,885,535.45x = 510,593,941,333,575,040
  5. Step 5: Solve for x
    x = 510,593,941,333,575,040/824,885,535.45
  6. Step 6: Final answer
    x = 618,987,628.45

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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.