Home / 877,980.28-1,316,066.46-345,285.40

Finding the Fourth Proportional to 877,980.28, 1,316,066.46 and 345,285.40

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Solution

The fourth proportional to 877,980.28, 1,316,066.46 and 345,285.40 is: 517,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,980.28 : 1,316,066.46 = 345,285.40 : x
  2. Step 2: Convert to fraction form
    877,980.28/1,316,066.46 = 345,285.40/x
  3. Step 3: Cross multiply
    877,980.28x = 1,316,066.46 × 345,285.40
  4. Step 4: Simplify right side
    877,980.28x = 454,418,534,067.68
  5. Step 5: Solve for x
    x = 454,418,534,067.68/877,980.28
  6. Step 6: Final answer
    x = 517,572.60

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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.