Home / 839,931.70-1,259,897.55-485,637.70

Finding the Fourth Proportional to 839,931.70, 1,259,897.55 and 485,637.70

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Solution

The fourth proportional to 839,931.70, 1,259,897.55 and 485,637.70 is: 728,456.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,931.70 : 1,259,897.55 = 485,637.70 : x
  2. Step 2: Convert to fraction form
    839,931.70/1,259,897.55 = 485,637.70/x
  3. Step 3: Cross multiply
    839,931.70x = 1,259,897.55 × 485,637.70
  4. Step 4: Simplify right side
    839,931.70x = 611,853,748,417.64
  5. Step 5: Solve for x
    x = 611,853,748,417.64/839,931.70
  6. Step 6: Final answer
    x = 728,456.55

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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.