Home / 1,316,354.86-1,975,260.89-642,441.75

Finding the Fourth Proportional to 1,316,354.86, 1,975,260.89 and 642,441.75

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Solution

The fourth proportional to 1,316,354.86, 1,975,260.89 and 642,441.75 is: 964,018.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,354.86 : 1,975,260.89 = 642,441.75 : x
  2. Step 2: Convert to fraction form
    1,316,354.86/1,975,260.89 = 642,441.75/x
  3. Step 3: Cross multiply
    1,316,354.86x = 1,975,260.89 × 642,441.75
  4. Step 4: Simplify right side
    1,316,354.86x = 1,268,990,062,878.16
  5. Step 5: Solve for x
    x = 1,268,990,062,878.16/1,316,354.86
  6. Step 6: Final answer
    x = 964,018.22

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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.