Home / 1,189,421.04-1,641,402.58-645,556.77

Finding the Fourth Proportional to 1,189,421.04, 1,641,402.58 and 645,556.77

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Solution

The fourth proportional to 1,189,421.04, 1,641,402.58 and 645,556.77 is: 890,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,421.04 : 1,641,402.58 = 645,556.77 : x
  2. Step 2: Convert to fraction form
    1,189,421.04/1,641,402.58 = 645,556.77/x
  3. Step 3: Cross multiply
    1,189,421.04x = 1,641,402.58 × 645,556.77
  4. Step 4: Simplify right side
    1,189,421.04x = 1,059,618,547,814.47
  5. Step 5: Solve for x
    x = 1,059,618,547,814.47/1,189,421.04
  6. Step 6: Final answer
    x = 890,869.18

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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.