Home / 858,020.40-1,287,030.60-718,052.40

Finding the Fourth Proportional to 858,020.40, 1,287,030.60 and 718,052.40

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Solution

The fourth proportional to 858,020.40, 1,287,030.60 and 718,052.40 is: 1,077,078.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,020.40 : 1,287,030.60 = 718,052.40 : x
  2. Step 2: Convert to fraction form
    858,020.40/1,287,030.60 = 718,052.40/x
  3. Step 3: Cross multiply
    858,020.40x = 1,287,030.60 × 718,052.40
  4. Step 4: Simplify right side
    858,020.40x = 924,155,411,203.44
  5. Step 5: Solve for x
    x = 924,155,411,203.44/858,020.40
  6. Step 6: Final answer
    x = 1,077,078.60

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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.