Home / 1,680,209.39-2,318,011.47-972,505.46

Finding the Fourth Proportional to 1,680,209.39, 2,318,011.47 and 972,505.46

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Solution

The fourth proportional to 1,680,209.39, 2,318,011.47 and 972,505.46 is: 1,341,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,209.39 : 2,318,011.47 = 972,505.46 : x
  2. Step 2: Convert to fraction form
    1,680,209.39/2,318,011.47 = 972,505.46/x
  3. Step 3: Cross multiply
    1,680,209.39x = 2,318,011.47 × 972,505.46
  4. Step 4: Simplify right side
    1,680,209.39x = 2,254,278,799,327.57
  5. Step 5: Solve for x
    x = 2,254,278,799,327.57/1,680,209.39
  6. Step 6: Final answer
    x = 1,341,665.40

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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.