Home / 1,126,929.64-1,555,084.61-668,020.50

Finding the Fourth Proportional to 1,126,929.64, 1,555,084.61 and 668,020.50

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Solution

The fourth proportional to 1,126,929.64, 1,555,084.61 and 668,020.50 is: 921,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,929.64 : 1,555,084.61 = 668,020.50 : x
  2. Step 2: Convert to fraction form
    1,126,929.64/1,555,084.61 = 668,020.50/x
  3. Step 3: Cross multiply
    1,126,929.64x = 1,555,084.61 × 668,020.50
  4. Step 4: Simplify right side
    1,126,929.64x = 1,038,828,387,598.98
  5. Step 5: Solve for x
    x = 1,038,828,387,598.98/1,126,929.64
  6. Step 6: Final answer
    x = 921,821.87

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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.