Home / 785,980.73-1,178,123.74-380,316.13

Finding the Fourth Proportional to 785,980.73, 1,178,123.74 and 380,316.13

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Solution

The fourth proportional to 785,980.73, 1,178,123.74 and 380,316.13 is: 570,064.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,980.73 : 1,178,123.74 = 380,316.13 : x
  2. Step 2: Convert to fraction form
    785,980.73/1,178,123.74 = 380,316.13/x
  3. Step 3: Cross multiply
    785,980.73x = 1,178,123.74 × 380,316.13
  4. Step 4: Simplify right side
    785,980.73x = 448,059,457,561.83
  5. Step 5: Solve for x
    x = 448,059,457,561.83/785,980.73
  6. Step 6: Final answer
    x = 570,064.17

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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.