Home / 993,455.64-1,490,329.26-319,314.72

Finding the Fourth Proportional to 993,455.64, 1,490,329.26 and 319,314.72

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Solution

The fourth proportional to 993,455.64, 1,490,329.26 and 319,314.72 is: 479,018.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,455.64 : 1,490,329.26 = 319,314.72 : x
  2. Step 2: Convert to fraction form
    993,455.64/1,490,329.26 = 319,314.72/x
  3. Step 3: Cross multiply
    993,455.64x = 1,490,329.26 × 319,314.72
  4. Step 4: Simplify right side
    993,455.64x = 475,884,070,364.71
  5. Step 5: Solve for x
    x = 475,884,070,364.71/993,455.64
  6. Step 6: Final answer
    x = 479,018.94

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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.