Home / 420,602,362.40-580,462,679.04-242,040,985.76

Finding the Fourth Proportional to 420,602,362.40, 580,462,679.04 and 242,040,985.76

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Solution

The fourth proportional to 420,602,362.40, 580,462,679.04 and 242,040,985.76 is: 334,034,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,602,362.40 : 580,462,679.04 = 242,040,985.76 : x
  2. Step 2: Convert to fraction form
    420,602,362.40/580,462,679.04 = 242,040,985.76/x
  3. Step 3: Cross multiply
    420,602,362.40x = 580,462,679.04 × 242,040,985.76
  4. Step 4: Simplify right side
    420,602,362.40x = 140,495,759,031,732,080
  5. Step 5: Solve for x
    x = 140,495,759,031,732,080/420,602,362.40
  6. Step 6: Final answer
    x = 334,034,640.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.