Home / 1,680,665.90-2,319,298.65-916,703.06

Finding the Fourth Proportional to 1,680,665.90, 2,319,298.65 and 916,703.06

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Solution

The fourth proportional to 1,680,665.90, 2,319,298.65 and 916,703.06 is: 1,265,039.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,665.90 : 2,319,298.65 = 916,703.06 : x
  2. Step 2: Convert to fraction form
    1,680,665.90/2,319,298.65 = 916,703.06/x
  3. Step 3: Cross multiply
    1,680,665.90x = 2,319,298.65 × 916,703.06
  4. Step 4: Simplify right side
    1,680,665.90x = 2,126,108,157,912.38
  5. Step 5: Solve for x
    x = 2,126,108,157,912.38/1,680,665.90
  6. Step 6: Final answer
    x = 1,265,039.15

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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.