Home / 839,931.80-1,259,897.70-307,275.80

Finding the Fourth Proportional to 839,931.80, 1,259,897.70 and 307,275.80

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Solution

The fourth proportional to 839,931.80, 1,259,897.70 and 307,275.80 is: 460,913.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,931.80 : 1,259,897.70 = 307,275.80 : x
  2. Step 2: Convert to fraction form
    839,931.80/1,259,897.70 = 307,275.80/x
  3. Step 3: Cross multiply
    839,931.80x = 1,259,897.70 × 307,275.80
  4. Step 4: Simplify right side
    839,931.80x = 387,136,073,685.66
  5. Step 5: Solve for x
    x = 387,136,073,685.66/839,931.80
  6. Step 6: Final answer
    x = 460,913.70

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Similar ratio
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1.5x scale

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.