Home / 619,312,967.12-929,543,319.48-312,819,905.36

Finding the Fourth Proportional to 619,312,967.12, 929,543,319.48 and 312,819,905.36

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Solution

The fourth proportional to 619,312,967.12, 929,543,319.48 and 312,819,905.36 is: 469,519,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,312,967.12 : 929,543,319.48 = 312,819,905.36 : x
  2. Step 2: Convert to fraction form
    619,312,967.12/929,543,319.48 = 312,819,905.36/x
  3. Step 3: Cross multiply
    619,312,967.12x = 929,543,319.48 × 312,819,905.36
  4. Step 4: Simplify right side
    619,312,967.12x = 290,779,653,227,753,856
  5. Step 5: Solve for x
    x = 290,779,653,227,753,856/619,312,967.12
  6. Step 6: Final answer
    x = 469,519,723.74

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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.