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Finding the Fourth Proportional to 1,275,795.60, 1,913,693.40 and 877,664.40

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Solution

The fourth proportional to 1,275,795.60, 1,913,693.40 and 877,664.40 is: 1,316,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,795.60 : 1,913,693.40 = 877,664.40 : x
  2. Step 2: Convert to fraction form
    1,275,795.60/1,913,693.40 = 877,664.40/x
  3. Step 3: Cross multiply
    1,275,795.60x = 1,913,693.40 × 877,664.40
  4. Step 4: Simplify right side
    1,275,795.60x = 1,679,580,569,694.96
  5. Step 5: Solve for x
    x = 1,679,580,569,694.96/1,275,795.60
  6. Step 6: Final answer
    x = 1,316,496.60

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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.