Home / 628,884,490.40-944,177,041.20-399,301,978.40

Finding the Fourth Proportional to 628,884,490.40, 944,177,041.20 and 399,301,978.40

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Solution

The fourth proportional to 628,884,490.40, 944,177,041.20 and 399,301,978.40 is: 599,492,858.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,884,490.40 : 944,177,041.20 = 399,301,978.40 : x
  2. Step 2: Convert to fraction form
    628,884,490.40/944,177,041.20 = 399,301,978.40/x
  3. Step 3: Cross multiply
    628,884,490.40x = 944,177,041.20 × 399,301,978.40
  4. Step 4: Simplify right side
    628,884,490.40x = 377,011,760,511,018,304
  5. Step 5: Solve for x
    x = 377,011,760,511,018,304/628,884,490.40
  6. Step 6: Final answer
    x = 599,492,858.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.