Home / 818,869.06-1,130,123.38-492,287.79

Finding the Fourth Proportional to 818,869.06, 1,130,123.38 and 492,287.79

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Solution

The fourth proportional to 818,869.06, 1,130,123.38 and 492,287.79 is: 679,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,869.06 : 1,130,123.38 = 492,287.79 : x
  2. Step 2: Convert to fraction form
    818,869.06/1,130,123.38 = 492,287.79/x
  3. Step 3: Cross multiply
    818,869.06x = 1,130,123.38 × 492,287.79
  4. Step 4: Simplify right side
    818,869.06x = 556,345,941,167.53
  5. Step 5: Solve for x
    x = 556,345,941,167.53/818,869.06
  6. Step 6: Final answer
    x = 679,407.70

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Double scale
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1.5x scale

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.