Home / 877,920.40-1,316,880.60-213,072.40

Finding the Fourth Proportional to 877,920.40, 1,316,880.60 and 213,072.40

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Solution

The fourth proportional to 877,920.40, 1,316,880.60 and 213,072.40 is: 319,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,920.40 : 1,316,880.60 = 213,072.40 : x
  2. Step 2: Convert to fraction form
    877,920.40/1,316,880.60 = 213,072.40/x
  3. Step 3: Cross multiply
    877,920.40x = 1,316,880.60 × 213,072.40
  4. Step 4: Simplify right side
    877,920.40x = 280,590,909,955.44
  5. Step 5: Solve for x
    x = 280,590,909,955.44/877,920.40
  6. Step 6: Final answer
    x = 319,608.60

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Similar ratio
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1.5x scale

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.