Home / 1,355,312.36-1,870,017.08-811,241.30

Finding the Fourth Proportional to 1,355,312.36, 1,870,017.08 and 811,241.30

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Solution

The fourth proportional to 1,355,312.36, 1,870,017.08 and 811,241.30 is: 1,119,325.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,312.36 : 1,870,017.08 = 811,241.30 : x
  2. Step 2: Convert to fraction form
    1,355,312.36/1,870,017.08 = 811,241.30/x
  3. Step 3: Cross multiply
    1,355,312.36x = 1,870,017.08 × 811,241.30
  4. Step 4: Simplify right side
    1,355,312.36x = 1,517,035,087,001.40
  5. Step 5: Solve for x
    x = 1,517,035,087,001.40/1,355,312.36
  6. Step 6: Final answer
    x = 1,119,325.06

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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.