Home / 398,791,444.40-597,142,849.80-320,653,012.40

Finding the Fourth Proportional to 398,791,444.40, 597,142,849.80 and 320,653,012.40

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Solution

The fourth proportional to 398,791,444.40, 597,142,849.80 and 320,653,012.40 is: 480,139,823.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,791,444.40 : 597,142,849.80 = 320,653,012.40 : x
  2. Step 2: Convert to fraction form
    398,791,444.40/597,142,849.80 = 320,653,012.40/x
  3. Step 3: Cross multiply
    398,791,444.40x = 597,142,849.80 × 320,653,012.40
  4. Step 4: Simplify right side
    398,791,444.40x = 191,475,653,621,490,720
  5. Step 5: Solve for x
    x = 191,475,653,621,490,720/398,791,444.40
  6. Step 6: Final answer
    x = 480,139,823.23

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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.