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Finding the Fourth Proportional to 619,807.80, 929,609.64 and 579,460.08

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Solution

The fourth proportional to 619,807.80, 929,609.64 and 579,460.08 is: 869,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,807.80 : 929,609.64 = 579,460.08 : x
  2. Step 2: Convert to fraction form
    619,807.80/929,609.64 = 579,460.08/x
  3. Step 3: Cross multiply
    619,807.80x = 929,609.64 × 579,460.08
  4. Step 4: Simplify right side
    619,807.80x = 538,671,676,363.17
  5. Step 5: Solve for x
    x = 538,671,676,363.17/619,807.80
  6. Step 6: Final answer
    x = 869,094.70

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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.