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Finding the Fourth Proportional to 570,437.04, 787,212.45 and 312,309.66

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Solution

The fourth proportional to 570,437.04, 787,212.45 and 312,309.66 is: 430,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,437.04 : 787,212.45 = 312,309.66 : x
  2. Step 2: Convert to fraction form
    570,437.04/787,212.45 = 312,309.66/x
  3. Step 3: Cross multiply
    570,437.04x = 787,212.45 × 312,309.66
  4. Step 4: Simplify right side
    570,437.04x = 245,854,052,607.27
  5. Step 5: Solve for x
    x = 245,854,052,607.27/570,437.04
  6. Step 6: Final answer
    x = 430,992.44

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1.5x scale

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.