Home / 915,980.46-1,374,095.46-316,780.80

Finding the Fourth Proportional to 915,980.46, 1,374,095.46 and 316,780.80

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Solution

The fourth proportional to 915,980.46, 1,374,095.46 and 316,780.80 is: 475,214.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,980.46 : 1,374,095.46 = 316,780.80 : x
  2. Step 2: Convert to fraction form
    915,980.46/1,374,095.46 = 316,780.80/x
  3. Step 3: Cross multiply
    915,980.46x = 1,374,095.46 × 316,780.80
  4. Step 4: Simplify right side
    915,980.46x = 435,287,059,095.17
  5. Step 5: Solve for x
    x = 435,287,059,095.17/915,980.46
  6. Step 6: Final answer
    x = 475,214.35

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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.