Home / 1,420,836.47-2,129,818.63-611,748.64

Finding the Fourth Proportional to 1,420,836.47, 2,129,818.63 and 611,748.64

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Solution

The fourth proportional to 1,420,836.47, 2,129,818.63 and 611,748.64 is: 917,004.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,836.47 : 2,129,818.63 = 611,748.64 : x
  2. Step 2: Convert to fraction form
    1,420,836.47/2,129,818.63 = 611,748.64/x
  3. Step 3: Cross multiply
    1,420,836.47x = 2,129,818.63 × 611,748.64
  4. Step 4: Simplify right side
    1,420,836.47x = 1,302,913,650,349.16
  5. Step 5: Solve for x
    x = 1,302,913,650,349.16/1,420,836.47
  6. Step 6: Final answer
    x = 917,004.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.