Home / 1,115,368.80-1,671,206.40-641,227.20

Finding the Fourth Proportional to 1,115,368.80, 1,671,206.40 and 641,227.20

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Solution

The fourth proportional to 1,115,368.80, 1,671,206.40 and 641,227.20 is: 960,779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,368.80 : 1,671,206.40 = 641,227.20 : x
  2. Step 2: Convert to fraction form
    1,115,368.80/1,671,206.40 = 641,227.20/x
  3. Step 3: Cross multiply
    1,115,368.80x = 1,671,206.40 × 641,227.20
  4. Step 4: Simplify right side
    1,115,368.80x = 1,071,623,000,494.08
  5. Step 5: Solve for x
    x = 1,071,623,000,494.08/1,115,368.80
  6. Step 6: Final answer
    x = 960,779.07

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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.