Home / 1,521,148.80-2,098,526.40-917,201.28

Finding the Fourth Proportional to 1,521,148.80, 2,098,526.40 and 917,201.28

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Solution

The fourth proportional to 1,521,148.80, 2,098,526.40 and 917,201.28 is: 1,265,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,148.80 : 2,098,526.40 = 917,201.28 : x
  2. Step 2: Convert to fraction form
    1,521,148.80/2,098,526.40 = 917,201.28/x
  3. Step 3: Cross multiply
    1,521,148.80x = 2,098,526.40 × 917,201.28
  4. Step 4: Simplify right side
    1,521,148.80x = 1,924,771,100,193.79
  5. Step 5: Solve for x
    x = 1,924,771,100,193.79/1,521,148.80
  6. Step 6: Final answer
    x = 1,265,340.45

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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.