Home / 1,355,297.03-1,870,368.90-811,327.92

Finding the Fourth Proportional to 1,355,297.03, 1,870,368.90 and 811,327.92

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Solution

The fourth proportional to 1,355,297.03, 1,870,368.90 and 811,327.92 is: 1,119,667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,297.03 : 1,870,368.90 = 811,327.92 : x
  2. Step 2: Convert to fraction form
    1,355,297.03/1,870,368.90 = 811,327.92/x
  3. Step 3: Cross multiply
    1,355,297.03x = 1,870,368.90 × 811,327.92
  4. Step 4: Simplify right side
    1,355,297.03x = 1,517,482,509,269.69
  5. Step 5: Solve for x
    x = 1,517,482,509,269.69/1,355,297.03
  6. Step 6: Final answer
    x = 1,119,667.85

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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.