Home / 429,092,499.80-643,638,749.70-386,094,330.20

Finding the Fourth Proportional to 429,092,499.80, 643,638,749.70 and 386,094,330.20

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Solution

The fourth proportional to 429,092,499.80, 643,638,749.70 and 386,094,330.20 is: 579,141,495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,092,499.80 : 643,638,749.70 = 386,094,330.20 : x
  2. Step 2: Convert to fraction form
    429,092,499.80/643,638,749.70 = 386,094,330.20/x
  3. Step 3: Cross multiply
    429,092,499.80x = 643,638,749.70 × 386,094,330.20
  4. Step 4: Simplify right side
    429,092,499.80x = 248,505,271,956,186,976
  5. Step 5: Solve for x
    x = 248,505,271,956,186,976/429,092,499.80
  6. Step 6: Final answer
    x = 579,141,495.30

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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.