Home / 386,036,043.40-578,416,335.90-328,640,415.40

Finding the Fourth Proportional to 386,036,043.40, 578,416,335.90 and 328,640,415.40

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Solution

The fourth proportional to 386,036,043.40, 578,416,335.90 and 328,640,415.40 is: 492,417,711.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,036,043.40 : 578,416,335.90 = 328,640,415.40 : x
  2. Step 2: Convert to fraction form
    386,036,043.40/578,416,335.90 = 328,640,415.40/x
  3. Step 3: Cross multiply
    386,036,043.40x = 578,416,335.90 × 328,640,415.40
  4. Step 4: Simplify right side
    386,036,043.40x = 190,090,984,904,321,920
  5. Step 5: Solve for x
    x = 190,090,984,904,321,920/386,036,043.40
  6. Step 6: Final answer
    x = 492,417,711.13

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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.