Home / 915,216.40-1,372,824.60-495,312.40

Finding the Fourth Proportional to 915,216.40, 1,372,824.60 and 495,312.40

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Solution

The fourth proportional to 915,216.40, 1,372,824.60 and 495,312.40 is: 742,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,216.40 : 1,372,824.60 = 495,312.40 : x
  2. Step 2: Convert to fraction form
    915,216.40/1,372,824.60 = 495,312.40/x
  3. Step 3: Cross multiply
    915,216.40x = 1,372,824.60 × 495,312.40
  4. Step 4: Simplify right side
    915,216.40x = 679,977,047,405.04
  5. Step 5: Solve for x
    x = 679,977,047,405.04/915,216.40
  6. Step 6: Final answer
    x = 742,968.60

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Double scale
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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.