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Finding the Fourth Proportional to 570,442.04, 787,219.36 and 312,314.68

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Solution

The fourth proportional to 570,442.04, 787,219.36 and 312,314.68 is: 430,999.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,442.04 : 787,219.36 = 312,314.68 : x
  2. Step 2: Convert to fraction form
    570,442.04/787,219.36 = 312,314.68/x
  3. Step 3: Cross multiply
    570,442.04x = 787,219.36 × 312,314.68
  4. Step 4: Simplify right side
    570,442.04x = 245,860,162,508.21
  5. Step 5: Solve for x
    x = 245,860,162,508.21/570,442.04
  6. Step 6: Final answer
    x = 430,999.37

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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.