Home / 672,616,934.12-928,234,271.60-390,337,519.88

Finding the Fourth Proportional to 672,616,934.12, 928,234,271.60 and 390,337,519.88

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Solution

The fourth proportional to 672,616,934.12, 928,234,271.60 and 390,337,519.88 is: 538,679,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,616,934.12 : 928,234,271.60 = 390,337,519.88 : x
  2. Step 2: Convert to fraction form
    672,616,934.12/928,234,271.60 = 390,337,519.88/x
  3. Step 3: Cross multiply
    672,616,934.12x = 928,234,271.60 × 390,337,519.88
  4. Step 4: Simplify right side
    672,616,934.12x = 362,324,663,443,962,304
  5. Step 5: Solve for x
    x = 362,324,663,443,962,304/672,616,934.12
  6. Step 6: Final answer
    x = 538,679,068.37

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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.