Home / 386,823,544.32-533,854,114.56-288,868,339.20

Finding the Fourth Proportional to 386,823,544.32, 533,854,114.56 and 288,868,339.20

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Solution

The fourth proportional to 386,823,544.32, 533,854,114.56 and 288,868,339.20 is: 398,666,404.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,823,544.32 : 533,854,114.56 = 288,868,339.20 : x
  2. Step 2: Convert to fraction form
    386,823,544.32/533,854,114.56 = 288,868,339.20/x
  3. Step 3: Cross multiply
    386,823,544.32x = 533,854,114.56 × 288,868,339.20
  4. Step 4: Simplify right side
    386,823,544.32x = 154,213,551,448,033,728
  5. Step 5: Solve for x
    x = 154,213,551,448,033,728/386,823,544.32
  6. Step 6: Final answer
    x = 398,666,404.13

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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.