Home / 1,207,809.89-1,666,783.04-663,980.72

Finding the Fourth Proportional to 1,207,809.89, 1,666,783.04 and 663,980.72

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Solution

The fourth proportional to 1,207,809.89, 1,666,783.04 and 663,980.72 is: 916,296.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,809.89 : 1,666,783.04 = 663,980.72 : x
  2. Step 2: Convert to fraction form
    1,207,809.89/1,666,783.04 = 663,980.72/x
  3. Step 3: Cross multiply
    1,207,809.89x = 1,666,783.04 × 663,980.72
  4. Step 4: Simplify right side
    1,207,809.89x = 1,106,711,791,329.17
  5. Step 5: Solve for x
    x = 1,106,711,791,329.17/1,207,809.89
  6. Step 6: Final answer
    x = 916,296.35

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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.