Home / 917,315.30-1,374,806.55-442,979.30

Finding the Fourth Proportional to 917,315.30, 1,374,806.55 and 442,979.30

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Solution

The fourth proportional to 917,315.30, 1,374,806.55 and 442,979.30 is: 663,905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,315.30 : 1,374,806.55 = 442,979.30 : x
  2. Step 2: Convert to fraction form
    917,315.30/1,374,806.55 = 442,979.30/x
  3. Step 3: Cross multiply
    917,315.30x = 1,374,806.55 × 442,979.30
  4. Step 4: Simplify right side
    917,315.30x = 609,010,843,154.42
  5. Step 5: Solve for x
    x = 609,010,843,154.42/917,315.30
  6. Step 6: Final answer
    x = 663,905.69

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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.