Home / 287,369,607.20-431,012,420.40-82,876,359.20

Finding the Fourth Proportional to 287,369,607.20, 431,012,420.40 and 82,876,359.20

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Solution

The fourth proportional to 287,369,607.20, 431,012,420.40 and 82,876,359.20 is: 124,302,428.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,369,607.20 : 431,012,420.40 = 82,876,359.20 : x
  2. Step 2: Convert to fraction form
    287,369,607.20/431,012,420.40 = 82,876,359.20/x
  3. Step 3: Cross multiply
    287,369,607.20x = 431,012,420.40 × 82,876,359.20
  4. Step 4: Simplify right side
    287,369,607.20x = 35,720,740,172,731,808
  5. Step 5: Solve for x
    x = 35,720,740,172,731,808/287,369,607.20
  6. Step 6: Final answer
    x = 124,302,428.92

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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.