Home / 406,927,999.40-610,391,999.10-388,221,276.20

Finding the Fourth Proportional to 406,927,999.40, 610,391,999.10 and 388,221,276.20

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Solution

The fourth proportional to 406,927,999.40, 610,391,999.10 and 388,221,276.20 is: 582,331,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,927,999.40 : 610,391,999.10 = 388,221,276.20 : x
  2. Step 2: Convert to fraction form
    406,927,999.40/610,391,999.10 = 388,221,276.20/x
  3. Step 3: Cross multiply
    406,927,999.40x = 610,391,999.10 × 388,221,276.20
  4. Step 4: Simplify right side
    406,927,999.40x = 236,967,160,872,871,264
  5. Step 5: Solve for x
    x = 236,967,160,872,871,264/406,927,999.40
  6. Step 6: Final answer
    x = 582,331,914.30

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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.