Home / 419,904,430.60-629,856,645.90-290,657,979.40

Finding the Fourth Proportional to 419,904,430.60, 629,856,645.90 and 290,657,979.40

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Solution

The fourth proportional to 419,904,430.60, 629,856,645.90 and 290,657,979.40 is: 435,986,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,430.60 : 629,856,645.90 = 290,657,979.40 : x
  2. Step 2: Convert to fraction form
    419,904,430.60/629,856,645.90 = 290,657,979.40/x
  3. Step 3: Cross multiply
    419,904,430.60x = 629,856,645.90 × 290,657,979.40
  4. Step 4: Simplify right side
    419,904,430.60x = 183,072,860,008,955,264
  5. Step 5: Solve for x
    x = 183,072,860,008,955,264/419,904,430.60
  6. Step 6: Final answer
    x = 435,986,969.10

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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.