Home / 830,036.81-1,143,038.86-721,091.41

Finding the Fourth Proportional to 830,036.81, 1,143,038.86 and 721,091.41

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Solution

The fourth proportional to 830,036.81, 1,143,038.86 and 721,091.41 is: 993,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,036.81 : 1,143,038.86 = 721,091.41 : x
  2. Step 2: Convert to fraction form
    830,036.81/1,143,038.86 = 721,091.41/x
  3. Step 3: Cross multiply
    830,036.81x = 1,143,038.86 × 721,091.41
  4. Step 4: Simplify right side
    830,036.81x = 824,235,498,581.87
  5. Step 5: Solve for x
    x = 824,235,498,581.87/830,036.81
  6. Step 6: Final answer
    x = 993,010.78

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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.