Home / 818,866.53-1,130,119.90-492,285.26

Finding the Fourth Proportional to 818,866.53, 1,130,119.90 and 492,285.26

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Solution

The fourth proportional to 818,866.53, 1,130,119.90 and 492,285.26 is: 679,404.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,866.53 : 1,130,119.90 = 492,285.26 : x
  2. Step 2: Convert to fraction form
    818,866.53/1,130,119.90 = 492,285.26/x
  3. Step 3: Cross multiply
    818,866.53x = 1,130,119.90 × 492,285.26
  4. Step 4: Simplify right side
    818,866.53x = 556,341,370,397.26
  5. Step 5: Solve for x
    x = 556,341,370,397.26/818,866.53
  6. Step 6: Final answer
    x = 679,404.21

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.